[SECURITY] [DSA 417-2] New Linux 2.4.18 packages fix local root exploit (alpha)

From: Martin Schulze (joey_at_infodrom.org)
Date: 01/09/04

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    Date: Fri, 9 Jan 2004 14:52:19 +0100 (CET)
To: bugtraq@securityfocus.com

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    - --------------------------------------------------------------------------
    Debian Security Advisory DSA 417-2 security@debian.org
    http://www.debian.org/security/ Martin Schulze
    January 9th, 2004 http://www.debian.org/security/faq
    - --------------------------------------------------------------------------

    Package : kernel-image-2.4.18-1-alpha
    Vulnerability : mising boundary check
    Problem-Type : local
    Debian-specific: no
    CVE ID : CAN-2003-0985

    Since DSA 417-1 lacked fixed kernel image files for the alpha
    architecture these are added now. For completeness below is the
    original advisory:

      Paul Starzetz discovered a flaw in bounds checking in mremap() in
      the Linux kernel (present in version 2.4.x and 2.6.x) which may
      allow a local attacker to gain root privileges. Version 2.2 is not
      affected by this bug.

    For the stable distribution (woody) this problem has been fixed in
    version 2.4.18-13 for the alpha architecture.

    For the unstable distribution (sid) this problem will be fixed soon
    with newly uploaded packages.

    We recommend that you upgrade your kernel packages. This problem has
    been fixed in the upstream version 2.4.24 as well.

    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/k/kernel-image-2.4.18-1-alpha/kernel-image-2.4.18-1-alpha_2.4.18-13.dsc
          Size/MD5 checksum: 876 e9ee8553c93d1c775d740a42af0dad79
        http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-image-2.4.18-1-alpha_2.4.18-13.tar.gz
          Size/MD5 checksum: 24369 f81518d57cdc049f4fb050e26459ec7e

      Alpha architecture:

        http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-headers-2.4.18-1_2.4.18-13_alpha.deb
          Size/MD5 checksum: 3362926 3170b68fb7df696bdb2408b01fa0fabb
        http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-headers-2.4.18-1-generic_2.4.18-13_alpha.deb
          Size/MD5 checksum: 3512306 96787202bb14870c74a5f5f9dd5e645d
        http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-headers-2.4.18-1-smp_2.4.18-13_alpha.deb
          Size/MD5 checksum: 3514938 8a779bd6eed7624c335cc1c803608a09
        http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-image-2.4.18-1-generic_2.4.18-13_alpha.deb
          Size/MD5 checksum: 12425832 13eb3f9e969ee7299973fe42e78f24f1
        http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-image-2.4.18-1-smp_2.4.18-13_alpha.deb
          Size/MD5 checksum: 12799584 6029dadc4f7c7795f7bd2e9c4a5c7bf8

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

    - ---------------------------------------------------------------------------------
    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/>

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