Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2006.0673 -- [Win][UNIX/Linux][Debian]
New gzip packages fix arbitrary code execution
20 September 2006
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AusCERT Security Bulletin Summary
---------------------------------
Product: gzip
Publisher: Debian
Operating System: Debian GNU/Linux 3.1
UNIX variants (UNIX, Linux, OSX)
Windows
Impact: Execute Arbitrary Code/Commands
Denial of Service
Access: Remote/Unauthenticated
CVE Names: CVE-2006-4338 CVE-2006-4337 CVE-2006-4336
CVE-2006-4335 CVE-2006-4334
Original Bulletin: http://www.debian.org/security/2006/dsa-1181
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running gzip check for an updated version of the software for
their operating system.
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Debian Security Advisory DSA 1181-1 security@debian.org
http://www.debian.org/security/ Moritz Muehlenhoff
September 19th, 2006 http://www.debian.org/security/faq
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Package : gzip
Vulnerability : several
Problem-Type : local(remote)
Debian-specific: no
CVE ID : CVE-2006-4334 CVE-2006-4335 CVE-2006-4336 CVE-2006-4337 CVE-2006-4338
Tavis Ormandy from the Google Security Team discovered several
vulnerabilities in gzip, the GNU compression utility. The Common
Vulnerabilities and Exposures project identifies the following problems:
CVE-2006-4334
A null pointer dereference may lead to denial of service if gzip is
used in an automated manner.
CVE-2006-4335
Missing boundary checks may lead to stack modification, allowing
execution of arbitrary code.
CVE-2006-4336
A buffer underflow in the pack support code may lead to execution of
arbitrary code.
CVE-2006-4337
A buffer underflow in the LZH support code may lead to execution of
arbitrary code.
CVE-2006-4338
An infinite loop may lead to denial of service if gzip is used in
an automated manner.
For the stable distribution (sarge) these problems have been fixed in
version 1.3.5-10sarge2.
For the unstable distribution (sid) these problems have been fixed in
version 1.3.5-15.
We recommend that you upgrade your gzip 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 3.1 alias sarge
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Source archives:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2.dsc
Size/MD5 checksum: 566 b4ef2a9e595a17f8596fdefb1f4b9bf6
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2.diff.gz
Size/MD5 checksum: 60478 cd1bec47a01d72c800f3bac85dfcc5f3
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5.orig.tar.gz
Size/MD5 checksum: 331550 3d6c191dfd2bf307014b421c12dc8469
Alpha architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_alpha.deb
Size/MD5 checksum: 83740 450c8d78aa9654ab651ac21115834432
AMD64 architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_amd64.deb
Size/MD5 checksum: 75370 cf8896b90d00dc8fce58ab1e88149674
ARM architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_arm.deb
Size/MD5 checksum: 76472 24b1723495120c89b9a1a55712fc557d
HP Precision architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_hppa.deb
Size/MD5 checksum: 79586 9a2d72859917de0f8b269ea95f392b2b
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_i386.deb
Size/MD5 checksum: 71164 8267f1f753b0a2b380d149280b6e44bb
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_ia64.deb
Size/MD5 checksum: 91588 30b9aa547cfacc09cee832a9b7516b6e
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_m68k.deb
Size/MD5 checksum: 69110 cf17c8d59a6204c2dce1828f2b1f24c6
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_mips.deb
Size/MD5 checksum: 79488 e2242db1fb6e1c589a67658f96ba7f27
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_mipsel.deb
Size/MD5 checksum: 79350 da63d665a88c29c6cf07b1ef3566ecd1
PowerPC architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_powerpc.deb
Size/MD5 checksum: 76948 12e742fd43b8325e89f3b96e0cdd89a6
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_s390.deb
Size/MD5 checksum: 77540 0e75950ede6c45a332eead6d71b7e7a2
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.5-10sarge2_sparc.deb
Size/MD5 checksum: 74654 471feed410766674a72327e58702febd
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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