Day[0]

Latest Episodes:

[bounty] Web3 Universal XSS, Breaking BitBucket, and WAF Bypasses Sep 27, 2022

Show notes

Discussion this week around Chrome's Sanitizer API, and bypassing firewalls with webhooks and 0days (ModSecurity bypass), and a pre-auth BitBucket RCE.

Links and summaries are available at https://dayzerosec.com/podcast/153.html

[00:00:00] Introduction

[00:00:31] Exploiting Web3’s Hidden Attack Surface: Universal XSS on Netlify’s Next.js Library

[00:10:31] Breaking Bitbucket: Pre Auth Remote Command Execution [CVE-2022-36804]

[00:16:25] [Chrome] Sanitizer API bypass via prototype pollution

[00:23:02] How we Abused Repository Webhooks to Access Internal CI Systems at Scale

[00:35:03] WAF bypasses via 0days

[00:42:40] Cloning internal Google repos for fun and… info?

[00:43:19] How to turn security research into profit: a CL.0 case study

[binary] An iOS Bug, Attacking Titan-M, and MTE Arrives Sep 22, 2022

Show notes

This week we've got some summer highlights: the impact of MTE on Android, an iOS vuln and some primitive chaining in a Titan M exploit.

Links and summaries of today's topics are available on our website: https://dayzerosec.com/podcast/an-ios-bug-attacking-titan-m-and-mte-arrives.html

[00:01:17] Spot the Vuln - Easy Regex

[00:03:53] Binary Ninja - 3.1 The Performance Release

[00:11:52] Dogbolt - Decompiler Explorer

[00:15:28] Making Linux Kernel Exploit Cooking Harder

[00:23:31] MTE comes to Android

[00:37:19] ipc_kmsg_get_from_kernel, iOS 15.4 - root cause analysis

[00:44:48] Attacking Titan M with Only One Byte

[01:00:01] CVE-2022-29582 - An io_uring vulnerability

[01:07:47] mast1c0re: Hacking the PS4 / PS5 through the PS2 Emulator

[01:09:32] bd-jb: The first bd-j hack (PS4/PS5)

[01:11:01] [CVE-2022-34918] A crack in the Linux firewall

[bounty] Reading GitLab Hidden HackerOne Reports and Golang Parameter Smuggling Sep 20, 2022

Show notes

We are back at it, covering some write-ups and exploits we found interesting this summer. From browse-powered desyncs, to account take overs.

Links are available on our website at: https://dayzerosec.com/podcast/reading-gitlab-hidden-hackerone-reports-and-golang-parameter-smuggling.html

[00:02:17] Ridiculous vulnerability disclosure process with CrowdStrike Falcon Sensor
[00:15:03] [GitLab] Able to view hackerone report attachments
[00:26:59] Forwarding addresses is hard [CVE-2022-31813]
[00:32:18] "ParseThru" – Exploiting HTTP Parameter Smuggling in Golang
[00:46:41] Browser-Powered Desync Attacks
[01:09:30] Scraping the bottom of the CORS barrel (part 1)

[binary] Fuchsia OS, Printer Bugs, and Hacking Radare2 Jun 02, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/fuchsia-os-printer-bugs-and-hacking-radare2.html

Some silly issues in radare2, some printer hacking, some kernel vulnerabilities, and a look at exploiting Fuchsia OS on this weeks episode. Just as a reminder this will be our last episode until September.

[00:00:40] Spot the Vuln - Size Matters

[00:04:30] Multiple vulnerabilities in radare2

[00:10:08] The printer goes brrrrr!!!

[00:17:25] A Kernel Hacker Meets Fuchsia OS

[00:33:55] Finding Bugs in Windows Drivers, Part 1 - WDM

[00:41:23] Chat Question: Learning Kernel Exploitation

[00:50:25] Resources While We are Gone

The DAY[0] Podcast episodes are streamed live on Twitch (@dayzerosec) 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.

The Video archive can be found on our Youtube channel: https://www.youtube.com/c/dayzerosec

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

Or follow us on Twitter (@dayzerosec) to know when new releases are coming.

[bounty] A Zoom RCE, VMware Auth Bypass, and GitLab Stored XSS May 31, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/a-zoom-rce-vmware-auth-bypass-and-gitlab-stored-xss.html

Last bounty episode before our summer vacation, and we are ending off with some cool issues. XML Stanza smuggling in Zoom for a MitM attack, an odd auth bypass, a Gitlab Stored XSS and gadget based CSP bypass, and an interesting technique to leverage a path traversal/desync against NGINX Plus

[00:01:00] How I hacked CTX and PHPass Modules

[00:10:55] [Zoom] Remote Code Execution with XMPP Stanza Smuggling

[00:19:38] VMware Authentication Bypass Vulnerability [CVE-2022-22972]

[00:23:05] Breaking Reverse Proxy Parser Logic

[00:26:44] [GitLab] Stored XSS in Notes (with CSP bypass)

[00:37:13] GhostTouch: Targeted Attacks on Touchscreens without Physical Touch

[00:48:00] Resources While We Are Gone

The DAY[0] Podcast episodes are streamed live on Twitch (@dayzerosec) 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.

The Video archive can be found on our Youtube channel: https://www.youtube.com/c/dayzerosec

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

Or follow us on Twitter (@dayzerosec) to know when new releases are coming.

[binary] Pwn2Own, Parallels Desktop, and an AppleAVD Bug May 26, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/pwn2own-parallels-desktop-and-an-appleavd-bug.html

Just a couple vulnerabilities to talk about this week, but some interesting things to talk about in them. We also have some discussion about this year's pwn2own results and a couple things that caught out attention.

[00:01:02] Spot the Vuln - NoSQL, No Problem

[00:02:46] Pwn2Own Vancouver 2022 - The Results

[00:16:14] CVE-2022-22675: AppleAVD Overflow in AVC_RBSP::parseHRD

[00:23:16] Exploiting an Unbounded memcpy in Parallels Desktop

The DAY[0] Podcast episodes are streamed live on Twitch (@dayzerosec) 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.

The Video archive can be found on our Youtube channel: https://www.youtube.com/c/dayzerosec

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

Or follow us on Twitter (@dayzerosec) to know when new releases are coming.

[bounty] Stealing DropBox Google Drive Tokens, a GitLab Bug, and macOS "Powerdir" Vulnerability May 24, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/stealing-dropbox-google-drive-tokens-a-gitlab-bug-and-macos-powerdir-vulnerability.html

Kicking off the week with some discussion about DOJ's policy change before getting into some vulnerabilities: "powerdir" a macOS TCC bypass, an integer overflow on the web, and another attack against HelloSign and their Google Drive integration

[00:02:12] DOJ’s New CFAA Policy is a Good Start But Does Not Go Far Enough to Protect Security Researchers

[00:11:02] macOS Vulnerability "powerdir" could lead to unauthorized user data access

[00:17:17] Arbitrary POST request as victim user from HTML injection in Jupyter notebooks

[00:21:44] [Glovo] Integer overflow vulnerability

[00:25:11] Stealing Google Drive OAuth tokens from Dropbox

[00:29:46] Privileged pod escalations in Kubernetes and GKE

The DAY[0] Podcast episodes are streamed live on Twitch (@dayzerosec) 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.

The Video archive can be found on our Youtube channel: https://www.youtube.com/c/dayzerosec

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

Or follow us on Twitter (@dayzerosec) to know when new releases are coming.

[binary] Python 3 UAF and PS4/PS5 PPPoE Kernel Bug May 19, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/python-3-uaf-and-ps4-ps5-pppoe-kernel-bug.html

We have a couple normally low-impact bugs in Solana rBPF this week netting a $200k bounty, a Python 2.7+ Use-After-Free and a PS4 and PS5 remote kernel heap overflow along with some discussion about exploitability and usability for a jailbreak.

[00:00:48] Spot the Vuln - Clowning Around

[00:03:27] Earn $200K by fuzzing for a weekend

[00:17:37] Exploiting a Use-After-Free for code execution in every version of Python 3

[00:26:21] [PlayStation] Remote kernel heap overflow

The DAY[0] Podcast episodes are streamed live on Twitch (@dayzerosec) 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.

The Video archive can be found on our Youtube channel: https://www.youtube.com/c/dayzerosec

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

Or follow us on Twitter (@dayzerosec) to know when new releases are coming.

[bounty] Deleting Rubygems, BIG-IP Auth Bypass, and a Priceline Account Takeover May 17, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/yanking-rubygems-big-ip-auth-bypass-and-a-priceline-account-takeover.html

A lot of cool little bugs this week with some solid impact, Facebook and Priceline account takeovers, F5 iControl Authentication Bypass, and a couple other logic bugs.

[00:01:55] rubygems CVE-2022-29176 explained

[00:06:09] Multiple bugs chained to takeover Facebook Accounts which uses Gmail

[00:15:16] [curl] curl removes wrong file on error [CVE-2022-27778]

[00:18:33] [Priceline] Account takeover via Google OneTap

[00:22:14] F5 iControl REST Endpoint Authentication Bypass Technical Deep Dive

[00:29:02] The Underrated Bugs, Clickjacking, CSS Injection, Drag-Drop XSS, Cookie Bomb, Login+Logout CSRF…

[00:30:20] Hunting evasive vulnerabilities

The DAY[0] Podcast episodes are streamed live on Twitch (@dayzerosec) 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.

The Video archive can be found on our Youtube channel: https://www.youtube.com/c/dayzerosec

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

Or follow us on Twitter (@dayzerosec) to know when new releases are coming.

[binary] Pwn2Owning Routers and Anker Eufy Bugs May 12, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/pwn2owning-routers-and-anker-eufy-bugs.html

Just a few vulnerabilities this week, but we have some codeql discussion as its used to find several vulnerabilities in Accel-PPP VPN server, and a look at a bug submitted to Pwn2Own 2021.

[00:00:33] Spot the Vuln - Is It Clear

[00:05:13] Anker Eufy Homebase 2 libxm_av.so DemuxCmdInBuffer buffer overflow vulnerability

[00:08:18] Hunting bugs in Accel-PPP with CodeQL

[00:15:53] Competing in Pwn2Own 2021 Austin: Icarus at the Zenith

The DAY[0] Podcast episodes are streamed live on Twitch (@dayzerosec) 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.

The Video archive can be found on our Youtube channel: https://www.youtube.com/c/dayzerosec

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

Or follow us on Twitter (@dayzerosec) to know when new releases are coming.

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