[ GLSA 200509-18 ] Qt: Buffer overflow in the included zlib library

[GLSA]

Gentoo Linux Security Advisory

Title: Qt: Buffer overflow in the included zlib library (GLSA 200509-18)
Severity: normal
Exploitable: local
Date: September 26, 2005
Bug(s): #105695
ID: 200509-18

Synopsis


Qt is vulnerable to a buffer overflow which could potentially lead to the
execution of arbitrary code.


Background


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


Affected Packages

Package: x11-libs/qt
Vulnerable: < 3.3.4-r8
Unaffected: >= 3.3.4-r8
Architectures: All supported architectures


Description


Qt links to a bundled vulnerable version of zlib when emerged with the
zlib USE-flag disabled. This may lead to a buffer overflow.


Impact


By creating a specially crafted compressed data stream, attackers can
overwrite data structures for applications that use Qt, resulting in a
Denial of Service or potentially arbitrary code execution.


Workaround


Emerge Qt with the zlib USE-flag enabled.


Resolution


All Qt users should upgrade to the latest version: