[SECURITY] [DSA 903-2] New unzip packages fix unauthorised permissions modification



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Debian Security Advisory DSA 903-2 security@xxxxxxxxxx
http://www.debian.org/security/ Martin Schulze
January 12th, 2006 http://www.debian.org/security/faq
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Package : unzip
Vulnerability : race condition
Problem type : local
Debian-specific: no
CVE ID : CAN-2005-2475
BugTraq ID : 14450
Debian Bugs : 321927 343680

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 plese 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.


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 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
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Source archives:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5.dsc
Size/MD5 checksum: 571 75e2923b74af607785cbefbbea79d1ab
http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5.diff.gz
Size/MD5 checksum: 6484 73efae47dcd377abb934e36805c16190
http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50.orig.tar.gz
Size/MD5 checksum: 1068379 6d27bcdf9b51d0ad0f78161d0f99582e

Alpha architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_alpha.deb
Size/MD5 checksum: 160482 94b0a5e18d78866d92f375d6b93a22c3

ARM architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_arm.deb
Size/MD5 checksum: 139374 bd8cc4c654c901b5c320b2cdbf09f31b

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_i386.deb
Size/MD5 checksum: 122808 1d5669290431fb7fe83f688447b22d84

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_ia64.deb
Size/MD5 checksum: 191010 1cd02c151f46b5f7872a7de3079ebc2a

HP Precision architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_hppa.deb
Size/MD5 checksum: 146954 ee23ad6e2c40d38e4655be1f2666489d

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_m68k.deb
Size/MD5 checksum: 119578 7765363163750bed7e72472bee09afc4

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_mips.deb
Size/MD5 checksum: 142950 97af77c03fb69936407c86394fb846a5

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_mipsel.deb
Size/MD5 checksum: 143422 98a0ab0fd751c246ebd50e5c62886217

PowerPC architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_powerpc.deb
Size/MD5 checksum: 136368 b2bea065ae91032fe987aaf120e08ad9

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_s390.deb
Size/MD5 checksum: 137044 151da2fddaaca890dbf5166140f23881

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_sparc.deb
Size/MD5 checksum: 147498 022e8ca1cecf20178edd68296fd973aa


Debian GNU/Linux 3.1 alias sarge
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Source archives:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3.dsc
Size/MD5 checksum: 528 b6e01dbb89f9130fa16650b16f4d4e32
http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3.diff.gz
Size/MD5 checksum: 5387 807b5d9e8efa85e8caab673eff38aff7
http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52.orig.tar.gz
Size/MD5 checksum: 1140291 9d23919999d6eac9217d1f41472034a9

Alpha architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_alpha.deb
Size/MD5 checksum: 175506 90375091fd0c2577518bfd7db2202272

AMD64 architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_amd64.deb
Size/MD5 checksum: 154876 7129ee6610e6ec0320141bb7aaa5288e

ARM architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_arm.deb
Size/MD5 checksum: 155430 3fb2c5576d1709c6d7cc1b89d61a50b8

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_i386.deb
Size/MD5 checksum: 144934 0e860597ffe259038f7bb8e1ce2630df

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_ia64.deb
Size/MD5 checksum: 206648 d261bf8a2e3c8fce3d0898355a7420db

HP Precision architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_hppa.deb
Size/MD5 checksum: 162840 91d7d512b915757bf7c7e3e8640efa0c

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_m68k.deb
Size/MD5 checksum: 133734 878d1597bd5ef623a6bc70f6446654a4

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_mips.deb
Size/MD5 checksum: 163396 5cbe0e22136949f240031502ea07d456

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_mipsel.deb
Size/MD5 checksum: 163966 4066fa1e97bad61c47be9b6ffa47179f

PowerPC architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_powerpc.deb
Size/MD5 checksum: 157388 25c3d9d685ec411e5b53cc0e8002ca8e

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_s390.deb
Size/MD5 checksum: 156494 bfeb0b1d801266334e6a46f0818a9e6f

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_sparc.deb
Size/MD5 checksum: 154952 e1e42335312202d8b3f0727e9d78fda9


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@xxxxxxxxxxxxxxxx
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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