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Debian Security Advisory DSA 652-1 security (at) debian (dot) org [email concealed]
http://www.debian.org/security/ Martin Schulze
January 21st, 2005 http://www.debian.org/security/faq
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Package : unarj
Vulnerability : several
Problem-Type : local (remote)
Debian-specific: no
CVE ID : CAN-2004-0947 CAN-2004-1027
Debian Bug : 281922

Several vulnerabilities have been discovered in unarj, a non-free ARJ
unarchive utility. The Common Vulnerabilities and Exposures Project
identifies the following vulnerabilities:

CAN-2004-0947

A buffer overflow has been discovered when handling long file
names contained in an archive. An attacker could create a
specially crafted archive which could cause unarj to crash or
possibly execute arbitrary code when being extracted by a victim.

CAN-2004-1027

A directory traversal vulnerability has been found so that an
attacker could create a specially crafted archive which would
create files in the parent directory when being extracted by a
victim. When used recursively, this vulnerability could be used
to overwrite critical system files and programs.

For the stable distribution (woody) these problems have been fixed in
version 2.43-3woody1.

For the unstable distribution (sid) these problems don't apply since
unstable/non-free does not contain the unarj package.

We recommend that you upgrade your unarj package.

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
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Source archives:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1.dsc
Size/MD5 checksum: 528 e1d166f2eaf315641d1269a32ad1dc76
http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1.diff.gz
Size/MD5 checksum: 12903 4ef4cfad33d05ecc048d63596ab2673c
http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43.orig
.tar.gz
Size/MD5 checksum: 39620 7a481dc017f1fbfa7f937a97e66eb99f

Alpha architecture:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1_alpha.deb
Size/MD5 checksum: 29668 08dc91afd3146ccdfaa51d73f8be56e5

ARM architecture:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1_arm.deb
Size/MD5 checksum: 22784 ed352d363cbeb34ba2268db63a632824

Intel IA-32 architecture:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1_i386.deb
Size/MD5 checksum: 20690 aa9490bd82bc9aef4f6092d19fa83eaa

Intel IA-64 architecture:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1_ia64.deb
Size/MD5 checksum: 31072 0b1f0403cfaaf572399fcb60b2549664

HP Precision architecture:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1_hppa.deb
Size/MD5 checksum: 23888 15a8d6b0b7b565186398c0b8ebe3eb6a

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1_m68k.deb
Size/MD5 checksum: 20384 644a6dcc9f566bad384c050bc8b8fb14

PowerPC architecture:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1_powerpc.deb
Size/MD5 checksum: 23060 5c5a1f0157aa613337f80b439e78456f

IBM S/390 architecture:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1_s390.deb
Size/MD5 checksum: 22668 97dc977c8217a10d4915ee32db49edd5

Sun Sparc architecture:

http://security.debian.org/pool/updates/non-free/u/unarj/unarj_2.43-3woo
dy1_sparc.deb
Size/MD5 checksum: 25386 bd2210a978ad30306e3db2ab112c87e8

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

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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce (at) lists.debian (dot) org [email concealed]
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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