DSA 608-1: New zgv packages fix arbitrary code execution
Posted on: 12/14/2004 05:45 AM

New zgv packages are available for Debian GNU/Linux

Debian Security Advisory DSA 608-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
December 14th, 2004 http://www.debian.org/security/faq

Package : zgv
Vulnerability : integer overflows, unsanitised input
Problem-Type : remote
Debian-specific: no
CVE ID : CAN-2004-1095 CAN-2004-0999
BugTraq ID : 11556

Several vulnerabilities have been discovered in zgv, an SVGAlib graphics viewer for the i386 architecture. The Common Vulnerabilities and Exposures Project identifies the following problems:


Luke Macken and "infamous41md" independently discoverd multiple integer overflows in zgv. Remote exploitation of an integer overflow vulnerability could allow the execution of arbitrary code.


Mikulas Patocka discovered that malicious multiple-image (e.g. animated) GIF images can cause a segmentation fault in zgv.

For the stable distribution (woody) these problems have been fixed in version 5.5-3woody1.

For the unstable distribution (sid) these problems will be fixed soon.

We recommend that you upgrade your zgv package immediately.

Upgrade Instructions

wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

You may use an automated update by adding the resources from the footer to the proper configuration.

Debian GNU/Linux 3.0 alias woody

Source archives:

Size/MD5 checksum: 601 f6114a026863db918a6bd9a6cc201a97
Size/MD5 checksum: 8541 f501ad407808235577b2bc746ddfe4e6
Size/MD5 checksum: 329235 629386a4df72f6ec007319bf12db1374

Intel IA-32 architecture:

Size/MD5 checksum: 211772 36e675c74bafb546e5f6fb0da36385c3

These files will probably be moved into the stable distribution on its next update.

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