DSA 608-1: New zgv packages fix arbitrary code execution
Posted on: 12/14/2004 06:45 AM

New zgv packages are available for Debian GNU/Linux

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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
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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:

CAN-2004-1095

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.

CAN-2004-0999

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
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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
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Source archives:

http://security.debian.org/pool/updates/main/z/zgv/zgv_5.5-3woody2.dsc
Size/MD5 checksum: 601 f6114a026863db918a6bd9a6cc201a97
http://security.debian.org/pool/updates/main/z/zgv/zgv_5.5-3woody2.diff.gz
Size/MD5 checksum: 8541 f501ad407808235577b2bc746ddfe4e6
http://security.debian.org/pool/updates/main/z/zgv/zgv_5.5.orig.tar.gz
Size/MD5 checksum: 329235 629386a4df72f6ec007319bf12db1374

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/z/zgv/zgv_5.5-3woody2_i386.deb
Size/MD5 checksum: 211772 36e675c74bafb546e5f6fb0da36385c3


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


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