CVE-2024-6655

What it actually does

The flaw permits a GTK application to load an attacker-controlled shared library from the current working directory instead of trusted system paths under specific runtime conditions.

Why it matters to the business

Attackers who can influence the working directory of a GTK-based application may achieve arbitrary code execution on affected Linux systems, potentially leading to data theft or system compromise; the issue affects widely used desktop environments and applications on Debian 11.

How an attack unfolds

An attacker places a malicious shared library with a name that GTK will resolve in the current working directory, then convinces a user to execute a vulnerable GTK application from that directory, causing the library to be loaded and executed with the application's privileges.

How to fix it

Upgrade the affected GTK packages on Debian 11 systems to version 5.10.223-1 or later; avoid running untrusted GTK applications from user-writable directories until patched.

How to confirm the fix worked

Verify installed GTK package versions match or exceed 5.10.223-1 on Debian 11; test application startup from directories containing test libraries to confirm trusted-path resolution behavior.

Typical attack path

1. Identify a GTK application and a writable directory from which it may be launched
2. Craft a malicious shared library matching an expected library name
3. Place the library in the target working directory
4. Social-engineer or automate execution of the GTK application from that directory
5. Library is loaded at startup, executing attacker code

How to detect it

Review process creation and library load events for GTK applications started from non-standard directories; examine audit logs or strace output for unexpected .so files resolved from the current working directory.

What your security team should do

• Immediately schedule upgrade of GTK packages to 5.10.223-1 across all Debian 11 systems
• Update vulnerability scanning and asset inventory to flag unpatched GTK installations
• Review and restrict execution of GUI applications from untrusted directories via policy or sandboxing
• Monitor for new exploit code or increased EPSS scores over the next 30 days