Exploit – SCRT Team Blog

How One Twitch Chat Message Became Code Execution on a Streamer’s PC

A vulnerable chat overlay, an unsandboxed Chromium renderer, and a V8 bug already exploited in the wild were enough to turn viewer-controlled text into native code execution, with OBS itself left at its default settings.

HP One Agent: local privilege escalation through race condition [CVE-2026-5064]

One type of assessment we perform a lot, especially last year with Windows 10 coming to the end of its life, is what we call a workstation assessment. The goal is to identify weaknesses and vulnerabilities within a standard image or build and determine whether they can be exploited from various standpoints.

During such an assessment last year, when vulnerability research wasn’t yet fully performed by Claude, I was faced with an image which had a limited attack surface and very few additional software. One of them was HP One Agent, which I had never heard of at the time, but eventually allowed me to elevate privileges on the workstation due to a race condition and DLL side loading. Interestingly, this could have tied in quite nicely with my colleague Leon‘s research surrounding bloatware which he presented at Defcon last year.

Hijacking the Windows “MareBackup” Scheduled Task for Privilege Escalation

The built-in “MareBackup” scheduled task is susceptible to a trivial executable search order hijacking, which can be abused by a low-privileged user to gain SYSTEM privileges whenever a vulnerable folder is prepended to the system’s PATH environment variable (instead of being appended).

Arbitrary web root file read in Sitecore before v10.4.0 rev. 010422

As part of our continuous pentesting offering, we try to identify solutions used by multiple clients to guide our research efforts to deliver the greatest impact. That is why, recently, we spent some time searching for vulnerabilities within Sitecore to find what we initially thought to be a 0-day, but ended up having been already patched some time earlier.

Exploiting KsecDD through Server Silos

Earlier this year, an intriguing admin-to-kernel technique was published by @floesen_ in the form of a proof-of-concept (PoC) on GitHub. The author mentioned a strong limitation involving LSASS and Server Silos, without providing much details about it. This piqued our interest, so we decided to give it a second look…

Getting code execution on Veeam through CVE-2023-27532

While several blog posts have shown how to retrieve credentials through this vulnerability, we decided to dig deeper and see whether it was possible to execute arbitrary code through this issue.

Ghost in the PPL Part 3: LSASS Memory Dump

Following my failed attempt to achieve arbitrary code execution within a protected LSASS process using the BYOVDLL technique and an N-day exploit in the KeyIso service, I took a step back, and ~~reconsidered my life choices~~ opted for a less ambitious solution: a (not so) simple memory dump. After all, when it comes to LSASS, we are mostly interested in extracting credentials stored in memory.

Ghost in the PPL Part 2: From BYOVDLL to Arbitrary Code Execution in LSASS

In the previous part, I showed how a technique called “Bring Your Own Vulnerable DLL” (BYOVDLL) could be used to reintroduce known vulnerabilities in LSASS, even when it’s protected. In this second part, I’m going to discuss the strategies I considered and explored to improve my proof-of-concept, and hopefully achieve arbitrary code execution.

Ghost in the PPL Part 1: BYOVDLL

In this series of blog posts, I will explore yet another avenue for bypassing LSA Protection in Userland. I will also detail the biggest challenges I faced while developing a proof-of-concept, and discuss some novel techniques and tricks to load an arbitrary DLL in LSASS, or even dump its memory.

Apache Solr 8.3.1 RCE from exposed administration interface

Back in 2020, during an external pentest, I stumbled upon a visible Solr administration panel. With nothing else of interest, I focused on this specific application to test what was hidden underneath.