Day[0]

Latest Episodes:

[bounty] DynamicWeb RCE, VMWare Bugs, and Exploiting GitHub Actions Mar 01, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/dynamicweb-rce-vmware-bugs-and-exploiting-github-actions.html

Re-accessing the stup page, an unlikely scenario leaking Github Secrets, and a proxying issue in Carbon Black.

[00:00:34] Logic Flaw Leading to RCE in Dynamicweb 9.5.0 - 9.12.7

[00:06:15] Stealing a few more GitHub Actions secrets

[00:19:31] Catching bugs in VMware: Carbon Black Cloud Workload Appliance and vRealize Operations Manager

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] Zynq-7000 Secure Boot Bypass and Compiler-Created Bugs Feb 24, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/zynq-7000-secure-boot-bypass-and-compiler-created-bugs.html

Just one vulnerability this week, a secure boot bypass, and some research into detecting compiler introduced bugs. Ending the week with a discussion about how to learn fuzzing.

[00:00:58] Spot the Vuln - All Inclusive HMAC

[00:03:47] Zynq-7000 Secure Boot Bypass [CVE-2021-44850]

[00:19:32] Cross-Architecture Testing for Compiler-Introduced Security Bugs

[00:35:02] Question: Learning to Fuzz

[01:03:00] tmp.0ut v2

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] CoinDesk, Zabbix, and Leaking Secrets Through Mirrored Repos Feb 22, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/coindesk-zabbix-and-leaking-secrets-through-mirrored-repos.html

Lets talk about "sidedoors" this week, with two vulnerabilities abusing alternative access points, along with an overly verbose error message that actually had some immediate impact, and a look at the challenges of client-sided session.

[00:00:26] CoinDesk API Error Exposes Privileged Token

[00:05:28] A tale of 0-Click Account Takeover and 2FA Bypass.

[00:10:26] Zabbix - A Case Study of Unsafe Session Storage

[00:17:54] Multiple vulnerabilities in Concrete CMS - part2 (PrivEsc/SSRF/etc)

[00:25:15] Finding secrets in mirrored Git repositories

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] Another Kernel TIPC Bug, MySQL, and Buggy Go Feb 17, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/another-kernel-tipc-bug-mysql-and-buggy-go.html

This week we discuss taint analysis and where to use it compared with fuzzing, a couple buggy code patterns in Go to be on the lookout for, and another remote stack-overflow in the Kernel TIPC module.

[00:00:14] Spot the Vuln - How Much

[00:03:11] Linux Kernel kCTF VRP Extended

[00:05:39] MindShaRE: When MySQL Cluster Encounters Taint Analysis

[00:24:46] A deeper dive into CVE-2021-39137 - a Golang security bug that Rust would have prevented

[00:38:47] Remote Stack Overflow in Linux Kernel TIPC Module since 4.8 (net/tipc) [CVE-2022-0435]

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] Baby Monitor Bugs, Grafana, and Twitter De-anonymization Feb 16, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/baby-monitor-bugs-grafana-and-twitter-de-anonymization.html

CSRF lives again in the form of CORF, Cross-Origin Request Forgery with an attack against Grafana. We also take a look at some baby monitor issues and a de-anonymization attack against Twitter.

[00:00:28] Cross-origin request forgery against Grafana [CVE-2022-21703]

[00:17:50] Vulnerabilities Identified in Nooie Baby Monitor

[00:26:47] [Twitter] Discoverability by phone number/email restriction bypass

[00:32:40] EarnHub Exploit - Post mortem

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] Fastly Infoleak, Samba OOB Access, and Pwning MacOS Feb 10, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/fastly-infoleak-samba-oob-access-and-pwning-macos.html

A discussion heavy episode this week as we speculate about how some XNU code passed muster, and how to exploit a small overflow and weaponizing a large info-leak.

[00:00:17] Spot the Vuln - From Bits to Bytes

[00:05:09] MacOS 12 Use After Free

[00:13:08] A story of leaking uninitialized memory from Fastly

[00:34:08] Details on a Samba Code Execution Bug [CVE-2021-44142]

[00:46:05] Winning a $31337 Bounty after Pwning Ubuntu and Escaping Google's KCTF Containers [CVE-2022-0185]

[00:49:38] Sha256 Algorithm Explained

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] Hacking Google Drive Integrations and XSS Puzzles Feb 08, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/hacking-google-drive-integrations-and-xss-puzzles.html

A "maybe" issue this week in Ruby's net/http library, some long chains leading to XSS, and a look at abusing parameter injection for SSRF in applications integrating with the Google Drive API.

[00:00:26] [Ruby - net/http] HTTP Header Injection in the set_content_type method

[00:10:22] Don't trust comments

[00:16:54] HigherLogic Community RCE Vulnerability

[00:24:29] Solving DOM XSS Puzzles

[00:37:32] Hacking Google Drive Integrations

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] PwnKit, a Win32k Type Confusion, and Binary Ninja 3.0 Feb 03, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/pwnkit-a-win32k-type-confusion-and-binary-ninja-3-0.html

Binary ninja 3.0 just dropped, lets talk about that, then into pwnkit and a couple kernel bugs, and ending this week off with a discussion about dealing with imposter syndrome.

[00:00:18] Spot the Vuln - Maintain Order

[00:03:52] Binary Ninja 3.0

[00:13:09] PwnKit: Local Privilege Escalation Vulnerability Discovered in polkit’s pkexec [CVE-2021-4034]

[00:27:20] Win32k Window Object Type Confusion [CVE-2022-21882]

[00:34:20] Linux kernel: erroneous error handling after fd_install()

[00:38:26] Question: Dealing with Imposter Syndrome

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] Zoho Auth Bypass, a Bogus Bug, and Leaking Microsoft Bug Reports Feb 01, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/zoho-auth-bypass-a-bogus-bug-and-leaking-microsoft-bug-reports.html

A few unique issues this week, routing issues in ManageEngine, a Little Snitch bypass, an undecodable characters leading to a denial of service.

[00:00:37] CVE-2022-0329 and the problems with automated vulnerability management

[00:19:45] [Omise] XSS via X-Forwarded-Host header

[00:25:44] [FetLife] Specific Payload makes a Users Posts unavailable

[00:31:03] How I could have read your confidential bug reports by simple mail?

[00:36:38] Bypassing Little Snitch Firewall with Empty TCP Packets

[00:45:06] ZohOwned :: A Critical Authentication Bypass on Zoho ManageEngine Desktop Central

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] NetUSB RCE, a Linux Kernel Heap Overflow, and an XNU Use-After-Free Jan 27, 2022

Show notes

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/netusb-rce-a-kernel-heap-overflow-an-xnu-uaf.html

Integer overflows and underflow this week, covering vulns from desktop Zoom clients, to kernel and some routers.

[00:00:19] Spot the Vuln - One Verified JWT, Please

[00:03:27] Zooming in on Zero-click Exploits

[00:12:18] Zooming in on Zero-click Exploits

[00:26:39] XNU kernel use-after-free in mach_msg

[00:34:06] Linux kernel v5.1+ Heap buffer overflow in fs_context.c

[00:36:03] Linux kernel v5.1+ Heap buffer overflow in fs_context.c

[00:42:21] NetUSB RCE Flaw in Millions of End User Routers [CVE-2021-45608]

[00:47:54] Humble Book Bundle: Cybersecurity by Wiley

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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