uim: Privilege escalation vulnerability

Background

uim is a simple, secure and flexible input method library.

Description

Takumi Asaki discovered that uim insufficiently checks environment variables. setuid/setgid applications linked against libuim could end up executing arbitrary code. This vulnerability only affects immodule-enabled Qt (if you build Qt 3.3.2 or later versions with USE=“immqt” or USE=“immqt-bc”).

Impact

A malicious local user could exploit this vulnerability to execute arbitrary code with escalated privileges.

Workaround

There is no known workaround at this time.

Resolution

All uim users should upgrade to the latest available version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-i18n/uim-0.4.5.1"