Tag: 2025

Bring Your Own Vulnerable Driver (BYOVD) is a well-known post-exploitation technique used by adversaries. This blog post is part of a series. We will see how to abuse a vulnerable driver to gain access to Ring-0 capabilities. In this first post we describe in detail the exploitation of vulnerabilities found in a signed Lenovo driver on Windows.

The Open Source Technology Improvement Fund, Inc., engaged with Quarkslab to perform a security audit of the code snippets in the English version of PHP documentation, focused on some specific pages.

On August 20th, Apple released an out-of-band security fix for its main operating systems. This patch allegedly fixes CVE-2025-43300, an out-of-bounds write, addressed with improved bounds checking in the ImageIO framework. In this blog post we provide a root cause analysis of the vulnerability.

A technical exploration of Local Privilege Escalation Vulnerability in ControlPlane on macOS.

During a Red Team engagement, we compromised an AWS account containing a Confluence instance hosted on an EC2 virtual machine. Although we fully compromised the machine hosting the Confluence instance, we did not have valid credentials to log in but were able to interact with the underlying database. This led us to study the structure of the Confluence database and the mechanism for generating API tokens.

An introduction to Wirego, a tool for Wireshark plugin development

During an assumed breach ops via a virtual desktop interface, we discovered a wildcard allow firewall rule for the Azure Blob Storage service. We proved that even with restrictions in place, it was still possible to reach the Internet. Afterwards, we thought of abusing this firewall misconfiguration (recommended by Microsoft) in a much more useful way. To demonstrate that I built a SOCKS5 proxy that uses blobs to tunnel traffic to the target's internal network.

The following article explains how, during an audit, we examined Moodle (v4.4.3) and found ways of bypassing all the restrictions preventing SSRF vulnerabilities from being exploited.

The Open Source Technology Improvement Fund, Inc, thanks to funding provided by Sovereign Tech Fund, engaged with Quarkslab to perform a security audit of PHP-SRC, the interpreter of the PHP language.

A signature verification bypass in a function that verifies the integrity of ZIP archives in the AOSP framework