Debian Security Advisory
DSA-903-2 unzip -- race condition
- Date Reported:
- 21 Nov 2005
- Affected Packages:
- unzip
- Vulnerable:
- Yes
- Security database references:
- In the Debian bugtracking system: Bug 321927, Bug 343680.
In the Bugtraq database (at SecurityFocus): BugTraq ID 14450.
In Mitre's CVE dictionary: CVE-2005-2475. - More information:
-
The unzip update in DSA 903 contained a regression so that symbolic links that are resolved later in a zip archive aren't supported anymore. This update corrects this behaviour. For completeness, below please find the original advisory text:
Imran Ghory discovered a race condition in the permissions setting code in unzip. When decompressing a file in a directory an attacker has access to, unzip could be tricked to set the file permissions to a different file the user has permissions to.
For the old stable distribution (woody) this problem has been fixed in version 5.50-1woody5.
For the stable distribution (sarge) this problem has been fixed in version 5.52-1sarge3.
For the unstable distribution (sid) this problem has been fixed in version 5.52-6.
We recommend that you upgrade your unzip package.
- Fixed in:
-
Debian GNU/Linux 3.0 (woody)
- Source:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5.dsc
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5.diff.gz
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50.orig.tar.gz
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5.diff.gz
- Alpha:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_alpha.deb
- ARM:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_arm.deb
- Intel IA-32:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_i386.deb
- Intel IA-64:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_ia64.deb
- HPPA:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_hppa.deb
- Motorola 680x0:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_m68k.deb
- Big endian MIPS:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_mips.deb
- Little endian MIPS:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_mipsel.deb
- PowerPC:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_powerpc.deb
- IBM S/390:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_s390.deb
- Sun Sparc:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_sparc.deb
Debian GNU/Linux 3.1 (sarge)
- Source:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3.dsc
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3.diff.gz
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52.orig.tar.gz
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3.diff.gz
- Alpha:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_alpha.deb
- AMD64:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_amd64.deb
- ARM:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_arm.deb
- Intel IA-32:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_i386.deb
- Intel IA-64:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_ia64.deb
- HPPA:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_hppa.deb
- Motorola 680x0:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_m68k.deb
- Big endian MIPS:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_mips.deb
- Little endian MIPS:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_mipsel.deb
- PowerPC:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_powerpc.deb
- IBM S/390:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_s390.deb
- Sun Sparc:
- http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_sparc.deb
MD5 checksums of the listed files are available in the original advisory.
MD5 checksums of the listed files are available in the revised advisory.