Day[0]

Latest Episodes:

GitLab Prototype Pollution and Some Authentication Bypasses [Bounty Hunting] Nov 30, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/gitlab-prototype-pollution-and-some-authentication-bypasses.html

Short but sweet episode this week, prototype pollution, crypto issues, SSRF and some weird authentication.

[00:00:46] Arbitrary command execution in Gerapy [CVE-2021-32849]

[00:06:03] [jitsi-meet] Authentication Bypass when using JWT w/ public keys

[00:07:41] [jitsi-meet] Authentication Bypass when using JWT w/ public keys

[00:10:24] [shopify] A non-privileged user may create an admin account in Stocky

[00:13:21] [#0008] URL whitelist bypass in https://cxl-services.appspot.com

[00:19:20] [GitLab] Stored XSS via Mermaid Prototype Pollution vulnerability

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.

Hacking Neural Nets, a Chrome WebRTC UAF and Pwning Windows [Binary Exploitation] Nov 25, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/hacking-neural-nets-a-chrome-webrtc-uaf-and-pwning-windows.html

Some mroe kernel bugs this week as we look at bugs in Samsung's NPU driver (Android), Linux, and the WIndows Kernel.

[00:00:17] Spot the Vuln - Once Again - Solution

[00:03:12] Google Chrome WebRTC addIceCandidate use after free vulnerability

[00:08:53] Linux: UAF read: SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect())

[00:15:08] Fall of the machines: Exploiting the Qualcomm NPU (neural processing unit) kernel driver

[00:31:13] POC2021 – Pwning the Windows 10 Kernel with NTFS and WNF Slides

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.

Big Bounties by Exploiting WebKit's CSP & Concrete CMS Bugs [Bounty Hunting] Nov 23, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/big-bounties-by-exploiting-webkit-s-csp-concrete-cms-bugs.html

What happens when a vendor refused to fix your bug? Well you can go claim a bunch of bounties with it. We also talk about some novel request smuggling research on this episode.

[00:00:58] Multiple Concrete CMS vulnerabilities ( part1 - RCE )

[00:12:02] Exploiting CSP in Webkit to Break Authentication & Authorization

[00:24:57] T-Reqs: HTTP Request Smuggling with Differential Fuzzing

[00:35:30] An Illustrated Guide to Elliptic Curve Cryptography Validation

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.

DDR4 Rowhammer, Azure Bugs, "Essential 0days", and Backdoored IDA [Binary Exploitation] Nov 18, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/ddr4-rowhammer-azure-bugs-essential-0days-and-backdoored-ida.html

North Korea is at it again targeting researchers, 0day hoarding, breaching secure hardware, and fuzzing on this weeks episode.

[00:01:15] Spot the Vuln - Beyond the Grave

[00:03:50] ESET Research discovered a trojanized IDA Pro installer, distributed by the #Lazarus APT group

[00:12:39] Why Zero-Days Are Essential to Security - Randori

[00:29:32] Blacksmith - Rowhammer Returns

[00:43:04] Fuzzing Microsoft's RDP Client using Virtual Channels: Overview & Methodology

[00:57:45] Microsoft Azure Sphere Security Monitor SMSyscallCommitImageStaging stage-without-manifest denial of service vulnerability

[01:04:53] Microsoft Azure Sphere Kernel GPIO_SET_PIN_CONFIG_IOCTL information disclosure vulnerability

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.

Rust in the Web? A Special Guest and some Bad Crypto [Bounty Hunting] Nov 16, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/rust-in-the-web-a-special-guest-and-some-bad-crypto.html

We are joined by Bastian Gruber to start the episode with a discussion about Rust. Then we'll dive into a few interesting vulnerabilities this week including yet another ECDSA implementation issue and some header smuggling research.

[00:00:40] Rust Discussion with Bastian Gruber (Use the code poddayzero21 for 35% off Manning books)

[00:46:29] Arbitrary Signature Forgery in Stark Bank ECDSA Libraries [CVE-2021-43572, CVE-2021-43570, CVE-2021-43569, CVE-2021-43568, CVE-2021-43571]

[01:02:37] Becoming A Super Admin In Someone Elses Gsuite Organization And Taking It Over

[01:06:52] Private Blog Content Disclosed in Atom Feed

[01:08:29] Practical HTTP Header Smuggling: Sneaking Past Reverse Proxies to Attack AWS and Beyond

[01:17:01] IDOR through MongoDB Object IDs Prediction

[01:18:45] History of Cross-Site History Leaking

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.

A too trusty TrustZone and a few Linux Kernel bugs [Binary Exploitation] Nov 11, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/a-too-trusty-trustzone-and-a-few-linux-kernel-bugs.html

Some interesting vulnerability envrionments this week, some Trusted App issues, a couple Linux Kernel vulns, and a look at memory safety issues in unsafe Rust.

[00:00:19] Spot The Vuln - Extract All The Things - Solution

[00:03:43] Gerbv drill format T-code tool number out-of-bounds write vulnerability

[00:13:27] Vulnerable tzdemuxerservice TA on Samsung TVs (J-series)

[00:27:06] Remote Linux Kernel Heap Overflow | TIPC Module Allows Arbitrary Code Execution [CVE-2021-43267]

[00:33:49] SLUB overflow [CVE-2021-42327]

[00:43:50] Rudra: Finding Memory Safety Bugs in Rust at the Ecosystem Scale

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.

A MacOS SIP Bypass & an XSS Fiesta [Bounty Hunting] Nov 09, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/a-macos-sip-bypass-an-xss-fiesta.html

A discussion heavy episode this week, starting off with the "new" Trojan Source attackers, and then talking about a handful of interesting vulnerabilities.

[00:00:18] Trojan Source Attacks

[00:24:07] [SmartStoreNET] Malicious Message leading to E-Commerce Takeover

[00:34:24] [Chrome] Cross-Site Scripting in New-Tab Page [CVE-2021-37999]

[00:39:48] [StreamLabs] Steal access_token via open redirect

[00:43:18] Microsoft finds new macOS vulnerability, Shrootless, that could bypass System Integrity Protection

[00:50:04] Android security checklist: WebView

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.

Type Confusion in Android NFC, PHP-FPM Local Privilege Escalation, and CallbackHell [Binary Exploitation] Nov 04, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/type-confusion-in-android-nfc-php-fpm-local-privilege-escalation-and-callbackhell.html

This week we dive into PHP-FPM internals to look at escelating from a worker process to the root process, anotehr GDI bug, and a type confusion.

[00:00:18] Spot the Vuln - Over the Edge - Solution

[00:03:40] Trick & Treat! Paying Leets and Sweets for Linux Kernel privescs and k8s escapes

[00:10:33] Android NFC: Type confusion due to race condition during tag type change

[00:14:50] PHP-FPM local root vulnerability

[00:28:26] GitHub - ly4k/CallbackHell: Exploit for CVE-2021-40449 - Win32k Elevation of Privilege Vulnerability (LPE)

[00:29:54] GitHub - ly4k/CallbackHell: Exploit for CVE-2021-40449 - Win32k Elevation of Privilege Vulnerability (LPE)

[00:36:39] This bug doesn’t exist on x86: Exploiting an ARM-only race condition

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.

Discourse SNS RCE, a Stored XSS in GitLab, and a Reddit Race Condition [Bug Hunting] Nov 02, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/discourse-sns-rce-a-stored-xss-in-gitlab-and-a-reddit-race-condition.html

A couple unique vulns this week involving getting extra coins on Reddit, and bypassing certificate checking for a Discourse RCE.

[00:00:40] Agent 007: Pre-Auth Takeover of Build Pipelines in GoCD

[00:09:50] Race condition leads to Inflation of coins when bought via Google Play Store

[00:15:11] [GitLab] Stored XSS in Mermaid when viewing Markdown files

[00:33:28] Discourse SNS webhook RCE

[00:47:28] [GitLab] Stored XSS in Mermaid when viewing Markdown files

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.

A Kernel Race, SuDump, and a Chrome Garbage Collector Bug [Exploit Dev/VR] Oct 28, 2021

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/a-kernel-race-sudump-and-a-chrome-garbage-collector-bug.html

We start off this week with a look at in-the-wild 0days from the past seven years, before diving into some pretty awesome bugs this week including a OOB access in Squirrel (programming language), a couple Linux kernel issues and a Chrome garbage collector bug.

[00:00:22] Spot The Vuln - Just Be Positive - Solution

[00:06:42] Overview of 0days seen in the wild the last 7 years

[00:18:33] Squirrel Sandbox Escape allows Code Execution in Games and Cloud Services

[00:29:15] SuDump: Exploiting suid binaries through the kernel

[00:38:09] How a simple Linux kernel memory corruption bug can lead to complete system compromise

[00:55:46] Chrome in-the-wild bug analysis [CVE-2021-37975]

[01:12:40] FuzzCon Europe 2021

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.

Our TOPPODCAST Picks

Follow Us

Stay Connected

Related Podcasts

Links

Stay Connected