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Debian: New gzip packages fix several vulnerabilities Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
Debian Two problems have been discovered in gzip, the GNU compression utility.
- --------------------------------------------------------------------------
Debian Security Advisory DSA 752-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
July 11th, 2005                         http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : gzip
Vulnerability  : several
Problem-Type   : local (remote)
Debian-specific: no
CVE ID         : CAN-2005-0988 CAN-2005-1228
Debian Bug     : 305255

Two problems have been discovered in gzip, the GNU compression
utility.  The Common Vulnerabilities and Exposures project identifies
the following problems.

CAN-2005-0988

    Imran Ghory discovered a race condition in the permissions setting
    code in gzip.  When decompressing a file in a directory an
    attacker has access to, gunzip could be tricked to set the file
    permissions to a different file the user has permissions to.

CAN-2005-1228

    Ulf Härnhammar discovered a path traversal vulnerability in
    gunzip.  When gunzip is used with the -N option an attacker could
    this vulnerability to create files in an arbitrary directory with
    the permissions of the user.

For the oldstable distribution (woody) these problems have been fixed in
version 1.3.2-3woody5.

For the stable distribution (sarge) these problems have been fixed in
version 1.3.5-10.

For the unstable distribution (sid) these problems have been fixed in
version 1.3.5-10.

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 3.0 alias woody
- --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5.dsc
      Size/MD5 checksum:      577 b948bd1c9e50578a4a9109eed8090d20
    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5.diff.gz
      Size/MD5 checksum:     7146 59a0d39e9d98109bc698c22d6803516f
    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2.orig.tar.gz
      Size/MD5 checksum:   311011 57bff96b6b4bcbb060566bdbed29485d

  Alpha architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_alpha.deb
      Size/MD5 checksum:    76648 53d463707426c9f84d7d0cb7a6a1d742

  ARM architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_arm.deb
      Size/MD5 checksum:    68946 2610eba8ec765b72a82e8ff1c5e8efc1

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_i386.deb
      Size/MD5 checksum:    62238 c323f08a1c1c30e10800f36eed4ec3d4

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_ia64.deb
      Size/MD5 checksum:    87028 3c295aefd208e38f523d9719322f3bb4

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_hppa.deb
      Size/MD5 checksum:    72788 41c9211dce59753260d83635e8212ce1

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_m68k.deb
      Size/MD5 checksum:    61456 67ed89c721455f23c26735dc322c53a3

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_mips.deb
      Size/MD5 checksum:    71896 3907341326822557d0e2c8ed87af77e5

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_mipsel.deb
      Size/MD5 checksum:    71742 4ced896d0887f2a2a81c339ffff7544b

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_powerpc.deb
      Size/MD5 checksum:    69550 06f8ffd3e7bb5709b0c1e5854bd0c1d8

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_s390.deb
      Size/MD5 checksum:    66936 5ad01afb6c4c6f79785c18ea1d84d28e

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/g/gzip/gzip_1.3.2-3woody5_sparc.deb
      Size/MD5 checksum:    70416 ec2acb3ddfa0a6086665136ee4056e6e


  These files will probably be moved into the stable distribution on
  its next update.

- ---------------------------------------------------------------------------------
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
 
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