Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2006.0573 -- [UNIX/Linux][Debian]
New ncompress packages fix potential code execution
10 August 2006
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AusCERT Security Bulletin Summary
---------------------------------
Product: ncompress
Publisher: Debian
Operating System: UNIX variants (UNIX, Linux)
Debian GNU/Linux 3.1
Impact: Execute Arbitrary Code/Commands
Access: Remote/Unauthenticated
CVE Names: CVE-2006-1168
Original Bulletin: http://www.debian.org/security/2006/dsa-1149
Comment: This particular implementation of the UNIX "compress" and
"uncompress" utilities is used on Linux as well as some other
UNIX variants.
It is recommended that administrators running (n)compress check for
an updated version of the software for their operating system.
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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 <pkg>' and http://packages.debian.org/<pkg>
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