Windows Update Stack Elevation of Privilege Vulnerability

Summary Microsoft was notified that an elevation of privilege vulnerability exists in Windows Update, potentially enabling an attacker with basic user privileges to reintroduce previously mitigated vulnerabilities or circumvent some features of Virtualization Based Security VBS. However, an...

Wallarm’s Open Source API Firewall debuts at Blackhat Asia 2024 – Introduces Key New Features & Functionalities

Wallarm introduced its ongoing Open Source API Firewall project to the world at the recently concluded Blackhat Asia 2024 conference in Singapore. The open-source API Firewall by Wallarm is a free, lightweight API Firewall designed to protect REST and GraphQL API endpoints across cloud-native...

Reflecting on supply chain attacks halfway through 2023

Welcome to this weeks edition of the Threat Source newsletter. Between the Talos Takes episode last week and helping my colleague Hazel with the Half-Year in Review, I realized how much I had already forgotten about 2023 already. Its been a whirlwind, personally and professionally, and I think it...

Previewing Talos at BlackHat 2023

Welcome to this weeks edition of the Threat Source newsletter. The time has come once again for all of us well, not me specifically but lots of other Talos people to descend on Las Vegas for Hacker Summer Camp. Cisco Talos will be well-represented at BlackHat and DEF CON over the course of the ne...

KRBUACBypass - UAC Bypass By Abusing Kerberos Tickets

This POC is inspired by James Forshaw @tiraniddo shared at BlackHat USA 2022 titled “ Taking Kerberos To The Next Level ” topic, he shared a Demo of abusing Kerberos tickets to achieve UAC bypass. By adding a KERB-AD-RESTRICTION-ENTRY to the service ticket, but filling in a fake MachineID, we can...

Wordfence Launches Free Vulnerability Database For Commercial Use – And Launches Security Portal

Today we are incredibly excited to announce that Wordfence is launching an entirely free vulnerability database API and web interface, available for commercial use by hosting companies, security organizations, threat analysts, security researchers, and the WordPress user community. This is part o...

Threat Source newsletter (Aug. 4, 2022) — BlackHat 2022 preview

By Jon Munshaw. Welcome to this week’s edition of the Threat Source newsletter. After what seems like forever and honestly has been a really long time, we’re heading back to BlackHat in-person this year. We’re excited to see a lot of old friends again to commiserate, hang out, trade stories and...

0xCC'd

We spend a lot of time preparing for Blackhat, and as part of putting together content for the show, one of our best, Lurene Grenier, submitted an unexpected piece of content: a poem. Now this poem isn't our regular security research or a shiny piece of corporate correspondence which we would nev...

How we broke the cloud with two lines of code: the full story of ChaosDB

A summary and recording of Wiz's talk at BlackHat Europe 2021: the full extent of ChaosDB, the impact it had, and the questions it raises about security in managed cloud services...

Porn Problem: Adult Ads Persist on US Gov’t, Military Sites

U.S. military and government website subdomains have a sticky problem: They’re “quite vulnerable” to blackhat SEO tactics that result in persistent redirects to spammy Viagra ads and porn videos. An example is one that showed up on a dot.mil subdomain on the Minnesota National Guard site you can...

Threat Source newsletter (Aug. 5, 2021)

Newsletter compiled by Jon Munshaw.Good afternoon, Talos readers. We hope everyone is enjoying BlackHat and/or DEFCON this week, regardless of if you're attending virtually or in person. In case you missed any of our talks from BlackHat, you can check them out here, along... This is only the...

HTTP/2 Request Smuggling

HTTP Request Smuggling also known as an HTTP Desync Attack has experienced a resurgence in security research recently, thanks in large part to the outstanding work by security researcher James Kettle. His 2019 Blackhat presentation on HTTP Desync attacks exposed vulnerabilities with different...

Pstf2 - Passive Security Tools Fingerprinting Framework

Have you ever wanted a simple, easy and stealth bypass for multiple classes of security products? pstf^2 pronounced pstf-square is an implementation of an HTTP server capable of passive browser fingerprinting - and it might just be the thing you are looking for. When attackers try to deliver a...

FalconEye - Real-time detection software for Windows process injections

FalconEye is a windows endpoint detection software for real-time process injections. It is a kernel-mode driver that aims to catch process injections as they are happening real-time. Since FalconEye runs in kernel mode, it provides a stronger and reliable defense against process injection...

Microsoft Hyper-V 远程代码执行漏洞（CVE-2021-28476）

CVE-2021-28476: a guest-to-host "Microsoft Hyper-V Remote Code Execution Vulnerability" in vmswitch.sys. This is a proof of concept for CVE-2021-28476 "Hyper-V Remote Code Execution Vulnerability", an arbitrary memory read in vmswitch.sys Network virtualization service provider patched by Microso...

Exploit for CVE-2021-28476

CVE-2021-28476: a guest-to-host "Microsoft Hyper-V Remote Code...

Security Bulletin: Multiple vulnerabilities in IBM Jazz Team Server affect IBM Rational products based on IBM Jazz technology

Summary There are multiple vulnerabilities in the IBM Jazz Team Server affecting the following IBM Rational Products: Collaborative Lifecycle Management CLM, Rational DOORS Next Generation RDNG, Rational Engineering Lifecycle Manager RELM, Rational Team Concert RTC, Rational Quality Manager RQM,...

FortiOS Path Traversal Credential Gatherer

Fortinet FortiOS versions 5.4.6 to 5.4.12, 5.6.3 to 5.6.7 and 6.0.0 to 6.0.4 are vulnerable to a path traversal vulnerability within the SSL VPN web portal which allows unauthenticated attackers to download FortiOS system files through specially crafted HTTP requests. This module exploits this...

CVE-2020-28948

ArchiveTar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked. Recent assessments: gwillcox-r7 at January 15, 2021 7:39pm UTC reported: Edit: PoC code for this can be found at along with the original advisory. An interesting vulnerability using the...

UPDATE: Infection Monkey 1.9.0

Infection Monkey 1.9.0, the open source breach and attack simulation tool was released a few hours ago - just in time for BlackHat/DefCon 2020. My first post about this tool can be found in a post titled the List of Adversary Emulation Tools. Updates include an expanded list of MITRE ATT&CK...