GTK+ 2, GdkPixbuf: Multiple XPM decoding vulnerabilities

GTK+ 2, GdkPixbuf: Multiple XPM decoding vulnerabilities The GdkPixbuf library, that is also included in GTK+ 2, contains vulnerabilities that could lead to a Denial of Service or the execution of arbitrary code. gtk+ November 16, 2005 November 16, 2005: 01 112608 remote 2.8.6-r1 2.6.10-r1 2.0 2.8.6-r1 0.22.0-r5 0.22.0-r5

GTK+ (the GIMP Toolkit) is a toolkit for creating graphical user interfaces. The GdkPixbuf library provides facilities for image handling. It is available as a standalone library and also packaged with GTK+ 2.

iDEFENSE reported a possible heap overflow in the XPM loader (CVE-2005-3186). Upon further inspection, Ludwig Nussel discovered two additional issues in the XPM processing functions : an integer overflow (CVE-2005-2976) that affects only gdk-pixbuf, and an infinite loop (CVE-2005-2975).

Using a specially crafted XPM image an attacker could cause an affected application to enter an infinite loop or trigger the overflows, potentially allowing the execution of arbitrary code.

There is no known workaround at this time.

All GTK+ 2 users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose x11-libs/gtk+

All GdkPixbuf users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/gdk-pixbuf-0.22.0-r5"

CVE-2005-2975 CVE-2005-2976 CVE-2005-3186 iDefense Security Advisory 11.15.05 koon koon