DSA 1149-1: New ncompress packages fix potential code execution
Posted on: 08/10/2006 06:42 AM

The Debian Security Team published a new security update for Debian GNU/Linux. Here the announcement:

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Debian Security Advisory DSA 1149-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
August 10th, 2006 http://www.debian.org/security/faq
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Package : ncompress
Vulnerability : buffer underflow
Problem type : local (remote)
Debian-specific: no
CVE ID : CVE-2006-1168

Tavis Ormandy from the Google Security Team discovered a missing
boundary check in ncompress, the original Lempel-Ziv compress and
uncompress programs, which allows a specially crafted datastream to
underflow a buffer with attacker controlled data.

For the stable distribution (sarge) this problem has been fixed in
version 4.2.4-15sarge2.

For the unstable distribution (sid) this problem has been fixed in
version 4.2.4-15sarge2.

We recommend that you upgrade your ncompress package.


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 at the end of this advisory:

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 3.1 alias sarge
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Source archives:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2.dsc
Size/MD5 checksum: 591 8fa14e666180e8a37491dcd33114dbff
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2.diff.gz
Size/MD5 checksum: 8124 1b7aa0d3079f334202df5d1c77e0f9bf
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4.orig.tar.gz
Size/MD5 checksum: 31765 7ef0d51aee53b6cd5c6aefe637491281

Alpha architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_alpha.deb
Size/MD5 checksum: 24370 72b955790079338f98afd62c49644897

AMD64 architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_amd64.deb
Size/MD5 checksum: 22924 58d6732c316a9317171c97e74e2cbe44

ARM architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_arm.deb
Size/MD5 checksum: 22522 3ec1cfdab5e4811ca5246a11b94b244d

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_i386.deb
Size/MD5 checksum: 22158 a875189b26255c72ad2ec532c23eef05

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_ia64.deb
Size/MD5 checksum: 26442 ef71240d1b7b4a699b5f817a46f7ead9

HP Precision architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_hppa.deb
Size/MD5 checksum: 24484 51c63bab7d53aa3392e268aec4d271ab

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_m68k.deb
Size/MD5 checksum: 21536 2cf5bbb67a3f32db857c75a2d352f47a

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_mips.deb
Size/MD5 checksum: 23878 a71db49787837da587552030045c73c1

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_mipsel.deb
Size/MD5 checksum: 23822 22ad68863b79b4bdf5302141be22deb6

PowerPC architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_powerpc.deb
Size/MD5 checksum: 22912 bafe112da108e4b66d64342b55ac4a47

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_s390.deb
Size/MD5 checksum: 22958 a8f180c5182ab1040746e66dfa99a6e1

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_sparc.deb
Size/MD5 checksum: 22532 db6aed643f82c6a0c0bdfded603d97be


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@lists.debian.org
Package info: `apt-cache show lt;pkggt;' and http://packages.debian.org/lt;pkggt;

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