Qt: Untrusted library search path

Background

Qt is a cross-platform GUI toolkit used by KDE.

Description

Tavis Ormandy of the Gentoo Linux Security Audit Team has discovered that Qt searches for shared libraries in an untrusted, world-writable directory.

Impact

A local attacker could create a malicious shared object that would be loaded by Qt, resulting in the execution of arbitrary code with the privileges of the Qt application.

Workaround

There is no known workaround at this time.

Resolution

All Qt users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=x11-libs/qt-3.3.4-r2"