Arch Linux ASA-201510-6 Medium: gdk-pixbuf2 DoS and Heap Overflow

Arch Linux Security Advisory ASA-201510-6
========================================
Severity: Medium
Date    : 2015-10-10
CVE-ID  : CVE-2015-7673 CVE-2015-7674
Package : gdk-pixbuf2
Type    : multiple issues
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package gdk-pixbuf2 before version 2.32.1-1 is vulnerable to denial
of service and heap buffer overflow.

Resolution
=========
Upgrade to 2.32.1-1.

# pacman -Syu "gdk-pixbuf2>=2.32.1-1"

The problems have been fixed upstream in version 2.32.1.

Workaround
=========
None.

Description
==========
- CVE-2015-7673 (denial of service)

It has been discovered that under certain circumstances while scaling a
tga file a heap memory allocation may fail which is later used and leads
to a denial of service.

- CVE-2015-7673 (heap buffer overflow)

It has been discovered that under certain circumstances while scaling a
gif file a heap buffer overflow can occur. The cause of this issue was
that the integer data type was incompatible with the details of how
bitwise shifts were used.

Impact
=====
A remote attacker is able to use specially crafted tga or gif files to
perform a denial of service attack or take advantage of a heap buffer
overflow to possibly have other impact.

References
=========
https://access.redhat.com/security/cve/CVE-2015-7673
https://www.cve.org/CVERecord?id=CVE-2015-7674
https://seclists.org/oss-sec/2015/q4/18
https://seclists.org/oss-sec/2015/q4/19