DSA 595-1: New bnc packages arbitrary code execution
Posted on: 11/24/2004 05:25 AM

New bnc packages are available for Debian GNU/Linux

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Debian Security Advisory DSA 595-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
November 24th, 2004 http://www.debian.org/security/faq
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Package : bnc
Vulnerability : buffer overflow
Problem-Type : remote
Debian-specific: no
CVE ID : CAN-2004-1052

Leon Juranic discovered that BNC, an IRC session bouncing proxy, does not always protect buffers from being overwritten. This could exploited by a malicious IRC server to overflow a buffer of limited size and execute arbitrary code on the client host.

For the stable distribution (woody) this problem has been fixed in version 2.6.4-3.3.

This package does not exist in the testing or unstable distributions.

We recommend that you upgrade your bnc 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
---------------------------------

Source archives:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3.dsc
Size/MD5 checksum: 543 a1450f3cf6b80026ec903f15f6585ae8
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3.diff.gz
Size/MD5 checksum: 3062 64db73a4d5fb93cd8d039ba13eb4b3dc
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4.orig.tar.gz
Size/MD5 checksum: 44333 1767b5bfdfd1c7a4a51a4114a326d014

Alpha architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_alpha.deb
Size/MD5 checksum: 30828 e8dd80226ae437e1f3d9bbcb694467a7

ARM architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_arm.deb
Size/MD5 checksum: 26770 c0ee6446147dc99465cebd1bda6dda60

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_i386.deb
Size/MD5 checksum: 26266 c98bb8052220d7c869fd691059cc4b33

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_ia64.deb
Size/MD5 checksum: 36164 d7ae31f108e9b82678c06695f241e046

HP Precision architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_hppa.deb
Size/MD5 checksum: 29878 53cb733232eff24419c98ce67d45d056

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_m68k.deb
Size/MD5 checksum: 25844 d6298a6dd44eae95a2a84d38f0bc09d1

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_mips.deb
Size/MD5 checksum: 29236 bd291995072ad9e3172c4f2683412e7c

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_mipsel.deb
Size/MD5 checksum: 29262 fd73461c1b0e65fa78424fc3f9b9631b

PowerPC architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_powerpc.deb
Size/MD5 checksum: 27718 4058b8b6d4bb98614941f6587e6f8f94

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_s390.deb
Size/MD5 checksum: 27232 99d2ddd170aa5b8425b9c2a0c5d74b2a

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_sparc.deb
Size/MD5 checksum: 29906 4276473db008684a75644ce7512d9a59


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


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