[binary] A Heap of Linux Bugs

Day[0]

47:59

Ep. 42 - RevPar Problems, Real Talk: When Memes Meet Metrics with Calvin Tilokee How do revenue managers really think? What makes hotel rates spike during Taylor Swift concerts—or Bigfoot conventions? And why do memes about ADR hit harder than your star report? In this episode of Tickets to Travel: The Business of Travel Experiences , we sit down with Calvin Tilokee of RevPAR Media, the sharp mind behind the viral @RevPARProblems Instagram account. Calvin pulls back the curtain on hotel pricing strategy, compression events, influencer marketing, and what event producers often get wrong when pitching to hotels. Whether you’re trying to block rooms for a major festival, fill your hotel over a soft week, or just want to understand the secret language of revenue managers, this episode is packed with insight and humor. This episode is a must-listen for hotel sales and revenue teams, meeting and event planners, festival promoters, and hospitality marketers. Follow @RevPARProblems on Instagram for daily hotel truths and satire. And subscribe now to hear why Calvin says: “We don’t need your group when we’re already full. Call us the week after Christmas.” For more insider conversations at the intersection of travel, ticketing, and live experiences, follow us on all socials @Tix2TravelPod and subscribe wherever you get your podcasts. If you haven’t listened yet, head to www.tttpod.com to catch up on past episodes.…

2 years ago 54:17

MP3•Episode home

Last week we brought you several Windows bugs, this week we are talking Linux kernel vulnerabilities and exploitation. We start off looking at a weird but cool CPU bug, Reptar, then we get into nftables, io_uring, and talk about a newer mitigations hitting Linux 6.6 that randomizes the caches allocations end up in.

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/226.html

[00:00:00] Introduction

[00:00:21] Reptar

[00:11:56] One shot, Triple kill: Pwning all three Google kernelCTF instances with a single 1-day Linux vulnerability

[00:31:09] Conquering the memory through io_uring - Analysis of CVE-2023-2598

[00:38:00] Exploring Linux's New Random Kmalloc Caches

[00:48:09] ThinkstScapes Quarterly - 2023.Q3

[00:49:34] CacheWarp

The DAY[0] Podcast episodes are streamed live on Twitch twice a week:

-- Mondays at 3:00pm Eastern (Boston) we focus on web and more bug bounty style vulnerabilities

-- Tuesdays at 7:00pm Eastern (Boston) we focus on lower-level vulnerabilities and exploits.

We are also available on the usual podcast platforms:

-- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063

-- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt

-- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz

-- Other audio platforms can be found at https://anchor.fm/dayzerosec

You can also join our discord: https://discord.gg/daTxTK9

282 episodes

#Tech #dayzerosec

[binary] A Heap of Linux Bugs

Day[0]

43 subscribers

published 2 years ago

MP3•Episode home

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/226.html

[00:00:00] Introduction

[00:00:21] Reptar

[00:11:56] One shot, Triple kill: Pwning all three Google kernelCTF instances with a single 1-day Linux vulnerability

[00:31:09] Conquering the memory through io_uring - Analysis of CVE-2023-2598

[00:38:00] Exploring Linux's New Random Kmalloc Caches

[00:48:09] ThinkstScapes Quarterly - 2023.Q3

[00:49:34] CacheWarp

The DAY[0] Podcast episodes are streamed live on Twitch twice a week:

-- Mondays at 3:00pm Eastern (Boston) we focus on web and more bug bounty style vulnerabilities

-- Tuesdays at 7:00pm Eastern (Boston) we focus on lower-level vulnerabilities and exploits.

We are also available on the usual podcast platforms:

-- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063

-- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt

-- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz

-- Other audio platforms can be found at https://anchor.fm/dayzerosec

You can also join our discord: https://discord.gg/daTxTK9

282 episodes

#Tech #dayzerosec

All episodes

1
Exploiting VS Code with Control Characters 30:08

8 weeks ago30:08

30:08

A quick episode this week, which includes attacking VS Code with ASCII control characters, as well as a referrer leak and SCIM hunting. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/282.html [00:00:00] Introduction [00:00:57] Attacking Hypervisors - Training Update [00:06:20] Drag and Pwnd: Leverage ASCII characters to exploit VS Code [00:12:12] Full Referer URL leak through img tag [00:17:52] SCIM Hunting - Beyond SSO [00:25:17] Breaking the Sound Barrier Part I: Fuzzing CoreAudio with Mach Messages Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Mitigating Browser Hacking - Interview with John Carse (SquareX Field CISO) 1:46:57

11 weeks ago1:46:57

1:46:57

A special episode this week, featuring an interview with John Carse, Chief Information Security Officer (CISO) of SquareX. John speaks about his background in the security industry, grants insight into attacks on browsers, and talks about the work his team at SquareX is doing to detect and mitigate browser-based attacks.…

1
Pulling Gemini Secrets and Windows HVPT 1:33:22

12 weeks ago1:33:22

1:33:22

A long episode this week, featuring an attack that can leak secrets from Gemini's Python sandbox, banks abusing private iOS APIs, and Windows new Hypervisor-enforced Paging Translation (HVPT). Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/280.html [00:00:00] Introduction [00:00:18] Doing the Due Diligence - Analyzing the Next.js Middleware Bypass [CVE-2025-29927] [00:29:20] We hacked Google’s A.I Gemini and leaked its source code (at least some part) [00:44:40] Improper Use of Private iOS APIs in some Vietnamese Banking Apps [00:55:03] Protecting linear address translations with Hypervisor-enforced Paging Translation (HVPT) [01:06:57] Code reuse in the age of kCET and HVCI [01:13:02] GhidraMCP: LLM Assisted RE [01:31:45] Emulating iOS 14 with qemu Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Session-ception and User Namespaces Strike Again 49:36

14 weeks ago49:36

49:36

API hacking and bypassing Ubuntu's user namespace restrictions feature in this week's episode, as well as a bug in CimFS for Windows and revisiting the infamous NSO group WebP bug. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/279.html [00:00:00] Introduction [00:00:28] Next.js and the corrupt middleware: the authorizing artifact [00:06:15] Pwning Millions of Smart Weighing Machines with API and Hardware Hacking [00:20:37] oss-sec: Three bypasses of Ubuntu's unprivileged user namespace restrictions [00:32:10] CimFS: Crashing in memory, Finding SYSTEM (Kernel Edition) [00:43:18] Blasting Past Webp [00:47:50] We hacked Google’s A.I Gemini and leaked its source code (at least some part) Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Extracting YouTube Creator Emails and Spilling Azure Secrets 44:04

15 weeks ago44:04

44:04

This episode features some game exploitation in Neverwinter Nights, weaknesses in mobile implementation for PassKeys, and a bug that allows disclosure of the email addresses of YouTube creators. We also cover some research on weaknesses in Azure. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/278.html [00:00:00] Introduction [00:00:35] Exploiting Neverwinter Nights [00:08:48] PassKey Account Takeover in All Mobile Browsers [CVE-2024-9956] [00:22:51] Disclosing YouTube Creator Emails for a $20k Bounty [00:31:58] Azure’s Weakest Link? How API Connections Spill Secrets [00:39:02] SAML roulette: the hacker always wins [00:40:56] Compromise of Fuse Encryption Key for Intel Security Fuses Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
ESP32 Backdoor Drama and SAML Auth Bypasses 1:14:08

16 weeks ago1:14:08

1:14:08

Discussion this week starts with the ESP32 "backdoor" drama that circled the media, with some XML-based vulnerabilities in the mix. Finally, we cap off with a post on reviving modprobe_path for Linux exploitation, and some discussion around an attack chain against China that was attributed to the NSA. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/277.html [00:00:00] Introduction [00:00:25] The ESP32 "backdoor" that wasn't [00:14:26] Speedrunners are vulnerability researchers [00:27:58] Sign in as anyone: Bypassing SAML SSO authentication with parser differentials [00:38:47] Impossible XXE in PHP [00:52:41] Reviving the modprobe_path Technique: Overcoming search_binary_handler() Patch [01:04:15] Trigon: developing a deterministic kernel exploit for iOS [01:06:43] An inside look at NSA (Equation Group) TTPs from China’s lense Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Exploiting Xbox 360 Hypervisor and Microcode Hacking 1:19:05

17 weeks ago1:19:05

1:19:05

A very technical episode this week, featuring some posts on hacking the xbox 360 hypervisor as well as AMD microcode hacking. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/276.html [00:00:00] Introduction [00:00:15] Reversing Samsung's H-Arx Hypervisor Framework - Part 1 [00:10:34] Hacking the Xbox 360 Hypervisor Part 1: System Overview [00:21:18] Hacking the Xbox 360 Hypervisor Part 2: The Bad Update Exploit [00:30:48] Zen and the Art of Microcode Hacking [00:41:51] A very fancy way to obtain RCE on a Solr server [01:03:49] Cellebrite zero-day exploit used to target phone of Serbian student activist [01:16:03] When NULL isn't null: mapping memory at 0x0 on Linux Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Path Confusion and Mixing Public/Private Keys 59:34

18 weeks ago59:34

59:34

This week's episode features a variety of vulnerabilities, including a warning on mixing up public and private keys in OpenID Connect deployments, as well as path confusion with an nginx+apache setup. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/275.html [00:00:00] Introduction [00:19:00] The OOB Read zi Introduced [00:16:55] Mixing up Public and Private Keys in OpenID Connect deployments [00:22:51] Nginx/Apache Path Confusion to Auth Bypass in PAN-OS [CVE-2025-0108] [00:31:50] Hacking High-Profile Bug Bounty Targets: Deep Dive into a Client-Side Chain [00:44:14] Uncovering Apple Vulnerabilities: diskarbitrationd and storagekitd Audit Part 3 [00:48:48] GigaVulnerability: readout protection bypass on GigaDevice GD32 MCUs [00:56:57] Attempted Research in PHP Class Pollution Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
ZDI's Triaging Troubles and LibreOffice Exploits 57:02

19 weeks ago57:02

57:02

We discuss an 0day that was dropped on Parallels after 7 months of no fix from the vendor, as well as ZDI's troubles with responses to researchers and reproducing bugs. Also included are a bunch of filesystem issues, and an insanely technical linux kernel exploit chain. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/274.html [00:00:00] Introduction [00:00:12] Training: Attacking Hypervisors [00:01:03] Dropping a 0 day: Parallels Desktop Repack Root Privilege Escalation [00:24:48] From Convenience to Contagion: The Half-Day Threat and Libarchive Vulnerabilities Lurking in Windows 11 [00:30:19] Exploiting LibreOffice [CVE-2024-12425, CVE-2024-12426] [00:46:47] Patch-Gapping the Google Container-Optimized OS for $0 Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Recycling Exploits in MacOS and Pirating Audiobooks 1:17:06

20 weeks ago1:17:06

1:17:06

We cover a comical saga of vulnerabilities and variants from incomplete fixes in macOS, as well as a bypass of Chrome's miraclePtr mitigation against Use-After-Frees (UAFs). We also discuss an attack that abuses COM hijacking to elevate to SYSTEM through AVG Antivirus, and a permissions issue that allows unauthorized access to DRM'd audiobooks. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/273.html [00:00:00] Introduction [00:00:23] Attacking Hypervisors From KVM to Mobile Security Platforms [00:01:35] Endless Exploits: The Saga of a macOS Vulnerability Struck Nine Times [00:11:02] The Most "Golden" Bypass of 2024 [00:44:55] Leaking the email of any YouTube user for $10,000 [01:11:52] Unmasking Cryptographic Risks: A Deep Dive into the Nym Audit w/ Nadim Kobeissi Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Top 10 Web Hacking Techniques and Windows Shadow Stacks 1:12:42

21 weeks ago1:12:42

1:12:42

In this episode, we discuss the US government discloses how many 0ds were reported to vendors in a first-ever report. We also cover PortSwigger's top 10 web hacking techniques of 2024, as well as a deep dive on how kernel mode shadow stacks are implemented on Windows by Connor McGarr. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/272.html [00:00:00] Introduction [00:01:50] U.S. Government Disclosed 39 Zero-Day Vulnerabilities in 2023, Per First-Ever Report [00:19:54] What Okta Bcrypt incident can teach us about designing better APIs [00:40:08] Top 10 web hacking techniques of 2024 [00:55:03] Exploit Development: Investigating Kernel Mode Shadow Stacks on Windows [01:06:11] Accidentally uncovering a seven years old vulnerability in the Linux kernel Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Unicode Troubles, Bypassing CFG, and Racey Pointer Updates 41:29

22 weeks ago41:29

41:29

On the web side, we cover a portswigger post on ways of abusing unicode mishandling to bypass firewalls and a doyensec guide to OAuth vulnerabilities. We also get into a Windows exploit for a use-after-free in the telephony service that bypasses Control Flow Guard, and a data race due to non-atomic writes in the macOS kernel. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/271.html [00:00:00] Introduction [00:00:22] Bypassing character blocklists with unicode overflows [00:06:53] Common OAuth Vulnerabilities [00:18:37] Windows Telephony Service - It's Got Some Call-ing Issues [CVE-2024-26230] [00:32:05] TRAVERTINE (CVE-2025-24118) Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Deanonymization with CloudFlare and Subaru's Security Woes 1:07:35

23 weeks ago1:07:35

1:07:35

Zero Day Initiative posts their trends and observations from their threat hunting highlights of 2024, macOS has a sysctl bug, and a technique leverages CloudFlare to deanonymize users on messaging apps. PortSwigger also publishes a post on the Cookie Sandwich technique, and Subaru's weak admin panel security allows tracking and controlling other people's vehicles. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/270.html [00:00:00] Introduction [00:00:11] ZDI Threat Hunting 2024 - Highlights, Trends, and Challenges [00:21:44] Unique 0-click deanonymization attack targeting Signal, Discord and hundreds of platform [00:41:54] Stealing HttpOnly cookies with the cookie sandwich technique [00:49:06] Hacking Subaru: Tracking and Controlling Cars via the STARLINK Admin Panel Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
Excavating Exploits and PHP Footguns 1:12:18

24 weeks ago1:12:18

1:12:18

This week features a mix of topics, from polyglot PDF/JSON to android kernel vulnerabilities. Project Zero also publishes a post about excavating an exploit strategy from crash logs of an In-The-Wild campaign. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/269.html [00:00:00] Introduction [00:07:48] Attacking Hypervisors - From KVM to Mobile Security Platforms [00:12:18] Bypassing File Upload Restrictions To Exploit Client-Side Path Traversal [00:19:41] How an obscure PHP footgun led to RCE in Craft CMS [00:34:44] oss-security - RSYNC: 6 vulnerabilities [00:42:13] The Qualcomm DSP Driver - Unexpectedly Excavating an Exploit [00:59:59] security-research/pocs/linux/kernelctf/CVE-2024-50264_lts_cos/docs/exploit.md [01:10:35] GLibc Heap Exploitation Training Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

1
WhatsApp vs. NSO and CCC Talks 1:22:50

25 weeks ago1:22:50

1:22:50

Specter and zi discuss their winter break, cover some interesting CCC talks, and discuss the summary judgement in the WhatsApp vs. NSO Group case. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/268.html [00:00:00] Introduction [00:09:53] 38C3: Illegal Instructions [00:35:38] WhatsApp v. NSO Group [01:04:06] Vulnerability Research Highlights 2024 [01:08:45] Debugging memory corruption: Who wrote ‘2’ into my stack?! [01:16:46] HardBreak [01:20:14] Announcing CodeQL Community Packs Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Buggy Operating Systems Are Coming to Town 47:01

29 weeks ago47:01

47:01

In our last episode of 2024, we delve into some operating system bugs in both Windows and Linux, as well as some bugs that are not bugs but rather AI slop. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/267.html [00:00:00] Introduction [00:06:48] Buffer Overflow Risk in Curl_inet_ntop and inet_ntop4 [00:19:20] Bypassing WAFs with the phantom $Version cookie [00:27:51] Windows Sockets: From Registered I/O to SYSTEM Privileges [00:34:02] ksthunk.sys Integer Overflow (PE) [00:38:20] Linux Kernel: TOCTOU in Exec System Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Machine Learning Attacks and Tricky Null Bytes 45:07

30 weeks ago45:07

45:07

This week's episode contains some LLM hacking and attacks on classifiers, as well as the renewal of DMA attacks with SD Express and the everlasting problems of null bytes. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/266.html [00:00:00] Introduction [00:00:31] Hacking 2024 by No Starch [00:09:18] Announcing the Adaptive Prompt Injection Challenge (LLMail-Inject) [00:14:37] Breaking Down Adversarial Machine Learning Attacks Through Red Team Challenges [00:25:49] Null problem! Or: the dangers of an invisible byte [00:36:32] New dog, old tricks: DaMAgeCard attack targets memory directly thru SD card reader Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
A Windows Keyhole and Buggy OAuth 27:13

31 weeks ago27:13

27:13

A short episode this week, featuring Keyhole which abuses a logic bug in Windows Store DRM, an OAuth flow issue, and a CSRF protection bypass. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/265.html [00:00:00] Introduction [00:00:16] Attacking Hypervisors From KVM to Mobile Security Platforms [00:02:30] Keyhole [00:10:12] Drilling the redirect_uri in OAuth [00:18:00] Cross-Site POST Requests Without a Content-Type Header [00:24:03] New AMSI Bypss Technique Modifying CLR.DLL in Memory Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Linux Is Still a Mess and Vaultwarden Auth Issues 52:18

32 weeks ago52:18

52:18

Linux userspace is still a mess and has some bad bugs in root utilities, and Vaultwarden has an interesting auth bypass attack. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/264.html [00:00:00] Introduction [00:00:29] LPEs in needrestart [Ubuntu] [00:18:41] Vulnerability Disclosure: Authentication Bypass in Vaultwarden versions < 1.32.5 [00:31:50] From an Android Hook to RCE [00:43:34] Simple macOS kernel extension fuzzing in userspace with IDA and TinyInst Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
FortiJump Higher, Pishi, and Breaking Control Flow Flattening 1:00:38

33 weeks ago1:00:38

1:00:38

This week, we dive into some changes to V8CTF, the FortiJump Higher bug in Fortinet's FortiManager, as well as some coverage instrumentation on blackbox macOS binaries via Pishi. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/263.html [00:00:00] Introduction [00:00:25] V8 Sandbox Bypass Rewards [00:25:39] Hop-Skip-FortiJump-FortiJump-Higher - Fortinet FortiManager [CVE-2024-47575] [00:38:07] Pishi: Coverage guided macOS KEXT fuzzing. [00:44:20] Breaking Control Flow Flattening: A Deep Technical Analysis [00:55:10] Firefox Animation CVE-2024-9680 - Dimitri Fourny [00:57:13] Internship Offers for the 2024-2025 Season Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Static Analysis, LLMs, and In-The-Wild Exploit Chains 1:22:02

34 weeks ago1:22:02

1:22:02

Methodology is the theme of this week's episode. We cover posts about static analysis via CodeQL, as well as a novel blackbox binary querying language called QueryX. Project Zero also leverages Large Language Models to successfully find a SQLite vulnerability. Finally, we wrap up with some discussion on Hexacon and WOOT talks, with a focus on Clem1's In-The-Wild exploit chains insights via Google's Threat Analysis Group. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/262.html [00:00:00] Introduction [00:00:35] Discovering Hidden Vulnerabilities in Portainer with CodeQL [00:18:12] Finding Vulnerabilities in Firmware with Static Analysis Platform QueryX [00:28:25] From Naptime to Big Sleep: Using Large Language Models To Catch Vulnerabilities In Real-World Code [00:50:00] Hexacon2024 - Caught in the Wild, Past, Present and Future by Clem1 [01:06:34] Hexacon 2024 Videos [01:11:34] WOOT 2024 Videos [01:18:38] Securing the open source supply chain: The essential role of CVEs [01:20:19] A New Era of macOS Sandbox Escapes: Diving into an Overlooked Attack Surface and Uncovering 10+ New Vulnerabilities Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Attacking Browser Extensions and CyberPanel 58:18

35 weeks ago58:18

58:18

In this week's episode, we talk a little bit about LLMs and how they can be used with static analysis. We also cover GitHub Security Blog's post on attacking browser extensions, as well as a somewhat controversial CyberPanel Pre-Auth RCE that was disclosed. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/261.html [00:00:00] Introduction [00:01:56] Autonomous Discovery of Critical Zero-Days [00:14:43] Attacking browser extensions [00:25:26] What Are My OPTIONS? CyberPanel v2.3.6 pre-auth RCE [00:52:15] Security research on Private Cloud Compute [01:01:02] Bluetooth Low Energy GATT Fuzzing Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Hardwear.IO NL, DEF CON 32, and Filesystem Exploitation 1:11:24

36 weeks ago1:11:24

1:11:24

In this week's episode, Specter recaps his experiences at Hardwear.IO and a PS5 hypervisor exploit chain presented there. We also cover some of the recently released DEF CON 32 talks. After the conference talk, we get into some filesystem exploit tricks and how arbitrary file write can be taken to code execution in read-only environments. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/260.html [00:00:00] Introduction [00:00:27] Hardwear.io NL 2024 [00:14:27] Byepervisor - Breaking the PS5 Hypervisor Security [00:26:38] DEF CON 32 Main Stage Talks [00:51:16] The Missing Guide to Filesystem Security [01:00:51] Why Code Security Matters - Even in Hardened Environments [01:09:12] How I Defeated An MMO Game Hack Author Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Zendesk's Email Fiasco and Rooting Linux with a Lighter 50:26

38 weeks ago50:26

50:26

In this week's episode, we cover the fiasco of a vulnerability in Zendesk that could allow intrusion into multiple fortune 500 companies. We also discuss a project zero blogpost that talks about fuzzing Dav1d and the challenges of fuzzing, as well as rooting Linux via EMFI with a lighter. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/259.html [00:00:00] Introduction [00:00:57] 1 bug, $50,000+ in bounties, how Zendesk intentionally left a backdoor in hundreds of Fortune 500 companies [00:27:10] Effective Fuzzing: A Dav1d Case Study [00:40:15] Can You Get Root With Only a Cigarette Lighter? Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Summer Recap: Phrack, Off-by-One, and RCEs 54:11

39 weeks ago54:11

54:11

In our summer recap, we discuss Phrack's latest issue and talks from the new Off-by-One conference. We also cover some interesting bugs, such as a factorio lua RCE and another RCE via iconv. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/258.html [00:00:00] Introduction [00:01:06] Getting Started with Exploit Development [00:14:07] Bytecode Breakdown: Unraveling Factorio's Lua Security Flaws [00:24:35] Iconv, set the charset to RCE: Exploiting the glibc to hack the PHP engine (part 1) [00:43:29] Off-by-One Conference 2024 Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Attack of the CUPS and Exploiting Web Views via HSTS 1:08:09

40 weeks ago1:08:09

1:08:09

In this week's episode, we cover an attack utilizing HSTS for exploiting Android WebViews and abusing YouTube embeds in Google Slides for clickjacking. We also talk about the infamous CUPS attack, and the nuances that seem to be left behind in much of the discussion around it. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/257.html [00:00:00] Introduction [00:01:30] Exploiting Android Client WebViews with Help from HSTS [00:09:08] Using YouTube to steal your files [00:18:43] Attacking UNIX Systems via CUPS, Part I Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Future of the Windows Kernel and Encryption Nonce Reuse 33:52

41 weeks ago33:52

33:52

In this week's episode, we discuss Microsoft's summit with vendors on their intention to lock down the Windows kernel from endpoint security drivers and possibly anti-cheats. We also talk cryptography and about the problems of nonce reuse. Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/256.html [00:00:00] Introduction [00:01:12] Friends don’t let friends reuse nonces [00:13:22] Serious Cryptography, 2nd Edition [00:14:30] Taking steps that drive resiliency and security for Windows customers Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Iterating Exploits & Extracting SGX Keys 53:44

42 weeks ago53:44

53:44

We are back and testing out a new episode format focusing more on discussion than summaries. We start talking a bit about the value of learning hacking by iterating on the same exploit and challenging yourself as a means of practicing the creative parts of exploitation. Then we dive into the recent Intel SGX fuse key leak, talk a bit about what it means, how it happened. We are seeking feedback on this format. Particularly interested in those of you with more of a bug bounty or higher-level focus if an episode like this would still be appealing? If you want to share any feedback feel free to DM us (@__zi or @specterdev) or email us at media [at] dayzerosec.com Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/255.html [00:00:00] Introduction [00:04:55] Exploiting CVE-2024-20017 4 different ways [00:22:26] Intel SGX Fuse Keys Extracted [00:51:01] Introducing the URL validation bypass cheat sheet Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
Memory Corruption: Best Tackled with Mitigations or Safe-Languages 58:23

1 year ago58:23

58:23

Memory corruption is a difficult problem to solve, but many such as CISA are pushing for moves to memory safe languages. How viable is rewriting compared to mitigating? Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/254.html [00:00:00] Introduction [00:01:12] Clarifying Scope & Short/Long Term [00:04:28] Mitigations [00:15:37] Safe Languages Are Falliable [00:21:20] Weaknesses & Evolution of Mitigations [00:29:19] Rewriting and the Iterative Process [00:34:55] The Rewriting Scalability Argument [00:41:43] System vs App Bugs [00:48:46] Mitigations & Rewriting Are Not Mutually Exclusive [00:50:25] Corporate vs Open Source [00:54:12] Generational Change [00:56:18] Conclusion Podcast episodes are available on the usual podcast platforms: -- Apple Podcasts: https://podcasts.apple.com/us/podcast/id1484046063 -- Spotify: https://open.spotify.com/show/4NKCxk8aPEuEFuHsEQ9Tdt -- Google Podcasts: https://www.google.com/podcasts?feed=aHR0cHM6Ly9hbmNob3IuZm0vcy9hMTIxYTI0L3BvZGNhc3QvcnNz -- Other audio platforms can be found at https://anchor.fm/dayzerosec You can also join our discord: https://discord.gg/daTxTK9…

Day[0]

1
[discussion] A Retrospective and Future Look Into DAY[0] 1:03:55

1 year ago1:03:55