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Debian Security Advisory DSA 846-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
October 7th, 2005                       http://www.debian.org/security/faq
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Package        : cpio
Vulnerability  : several
Problem type   : local (remote)
Debian-specific: no
CVE ID         : CAN-2005-1111 CAN-2005-1229
Debian Bug     : 306693 305372

Two vulnerabilities have been discovered in cpio, a program to manage
archives of files.  The Common Vulnerabilities and Exposures project
identifies the following problems:

CAN-2005-1111

    Imran Ghory discovered a race condition in setting the file
    permissions of files extracted from cpio archives.  A local
    attacker with write access to the target directory could exploit
    this to alter the permissions of arbitrary files the extracting
    user has write permissions for.

CAN-2005-1229

    Imran Ghory discovered that cpio does not sanitise the path of
    extracted files even if the --no-absolute-filenames option was
    specified.  This can be exploited to install files in arbitrary
    locations where the extracting user has write permissions to.

For the old stable distribution (woody) these problems have been fixed in
version 2.4.2-39woody2.

For the stable distribution (sarge) these problems have been fixed in
version 2.5-1.3.

For the unstable distribution (sid) these problems have been fixed in
version 2.6-6.

We recommend that you upgrade your cpio 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/c/cpio/cpio_2.4.2-39woody2.dsc
      Size/MD5 checksum:      549 15ede7cbecf63993116b4e6a6565a52a
    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2.diff.gz
      Size/MD5 checksum:    23977 58175edde016c3ddb92804479697288f
    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2.orig.tar.gz
      Size/MD5 checksum:   181728 3e976db71229d52a8a135540698052df

  Alpha architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_alpha.deb
      Size/MD5 checksum:    72916 8a3c436670b93fe9d6c0d7b9c6620826

  ARM architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_arm.deb
      Size/MD5 checksum:    64050 96781e9c208d4629c9bad9fd489a6752

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_i386.deb
      Size/MD5 checksum:    61704 c4fd8a026047cd14a9516224d8319e13

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_ia64.deb
      Size/MD5 checksum:    84576 5d9d925c312a5a9f141949c134fd23d3

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_hppa.deb
      Size/MD5 checksum:    69922 219bd8e8d9de88975eca8c8df4e9ddd9

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_m68k.deb
      Size/MD5 checksum:    59998 b4ef64480db82238635e1c7f5b851eee

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_mips.deb
      Size/MD5 checksum:    69160 a3f333c7b10c4f06a37de29de89844c1

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_mipsel.deb
      Size/MD5 checksum:    68852 d704acf1b5d5c82ab024f6d45eab5686

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_powerpc.deb
      Size/MD5 checksum:    64284 4227c627aa48dc40cacdde9cb866322a

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_s390.deb
      Size/MD5 checksum:    64190 975304691e816ea35e5b1a1edbaca8fc

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody2_sparc.deb
      Size/MD5 checksum:    65916 e9fcc403a99fa3c930c9a7ede7daeef4


Debian GNU/Linux 3.1 alias sarge
- --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3.dsc
      Size/MD5 checksum:      533 ab5695c02739c74d12ceb5ccf15a2f9e
    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3.diff.gz
      Size/MD5 checksum:    26981 658f6330c2e56576251755f21291a22a
    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5.orig.tar.gz
      Size/MD5 checksum:   185480 e02859af1bbbbd73fcbf757acb57e0a4

  Alpha architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_alpha.deb
      Size/MD5 checksum:    75340 e5f2db24ac4a7fa37e03299092e04869

  AMD64 architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_amd64.deb
      Size/MD5 checksum:    68580 e04afdcd5c4cd7d4ae7b9314c91f2003

  ARM architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_arm.deb
      Size/MD5 checksum:    65356 599f5449dcd3c6774becab5db930c1eb

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_i386.deb
      Size/MD5 checksum:    64862 0af18766ab51b22276fe1458e19e6dfa

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_ia64.deb
      Size/MD5 checksum:    85968 ec853bd84c3c86a86edd1eaab3daaed9

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_hppa.deb
      Size/MD5 checksum:    70918 7d189eac1083bf7171a3378e076bd41d

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_m68k.deb
      Size/MD5 checksum:    61566 5a1b92f6d84b61108c382f282541d4fd

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_mips.deb
      Size/MD5 checksum:    73286 3e159d225f6ed5683206ee891e73e411

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_mipsel.deb
      Size/MD5 checksum:    72982 593e2f05e139ff23ba448289dde24085

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_powerpc.deb
      Size/MD5 checksum:    67680 4fd0a44a984aa4dba6bde7144289fc82

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_s390.deb
      Size/MD5 checksum:    68708 6ecc6f8ad9a1f5fd56eeea4fe421ef39

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/c/cpio/cpio_2.5-1.3_sparc.deb
      Size/MD5 checksum:    64812 04cec657cd5681d4ab8c8e27f70d1653


  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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