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UNIRAS Brief - 52/04 - Debian Security Bulletin - New Linux 2.4.17 packages fix local root exploit (mips+mipsel)


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   UNIRAS (UK Govt CERT) Briefing Notice - 52/04 dated 05.02.04  Time: 12:45
 UNIRAS is part of NISCC(National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Debian Security Bulletin:
New Linux 2.4.17 packages fix local root exploit (mips+mipsel)


RedHat and SuSE kernel and security teams revealed an integer overflow in the
do_brk() function of the Linux kernel allows local users to gain root privileges.

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Debian Security Advisory DSA 433-1                     security@xxxxxxxxxx
http://www.debian.org/security/                             Martin Schulze
February 4th, 2004                      http://www.debian.org/security/faq
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Package        : kernel-patch-2.4.17-mips
Vulnerability  : integer overflow
Problem-Type   : local
Debian-specific: no
CVE ID         : CAN-2003-0961

RedHat and SuSE kernel and security teams revealed an integer overflow
in the do_brk() function of the Linux kernel allows local users to
gain root privileges.

For the stable distribution (woody) this problem has been fixed in
version 2.4.17-0.020226.2.woody4.  Other architectures are already or
will be fixed separately.

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

We recommend that you upgrade your kernel image packages for the mips
and mipsel architectures.  This problem has been fixed in the upstream
version 2.4.23 as well and is also present in 2.4.24, of course.

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:

      Size/MD5 checksum:      786 2a51821fe269f966d29ad5606d6f2359
      Size/MD5 checksum:  1138358 70eb01fffb109418f252ce99cd185b36

  Architecture independent components:

      Size/MD5 checksum:  1138584 464028c10809e94a643519f0deb422cb

  Big endian MIPS architecture:

      Size/MD5 checksum:  3475508 bdf1d27f96cb5a93832d5b297ce64307

      Size/MD5 checksum:  2042436 9e4cc3cfcb829c9dea6654a76d08fbee

      Size/MD5 checksum:  2042364 16d2a70c00bff7d28bac333fe07177f8

  Little endian MIPS architecture:

      Size/MD5 checksum:  3474274 858fa1fa773007d0f302d011745a7843

      Size/MD5 checksum:  2198224 7c0930d1bb057576cb1fb0b386e3c66d

      Size/MD5 checksum:  2194006 c7dafc8d835d7eab96d45744f8156ddd
      Size/MD5 checksum:    14992 8e39b68df548876cf1489e5672499e93

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

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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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For additional information or assistance, please contact the HELP Desk by
telephone or Not Protectively Marked information may be sent via EMail to:

Office Hours:
Mon - Fri: 08:30 - 17:00 Hrs
Tel: +44 (0) 20 7821 1330 Ext 4511
Fax: +44 (0) 20 7821 1686

Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 20 7821 1330 and follow the prompts

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UNIRAS wishes to acknowledge the contributions of Debian for the information
contained in this Briefing.
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This Briefing contains the information released by the original author. Some
of the information may have changed since it was released. If the vulnerability
affects you, it may be prudent to retrieve the advisory from the canonical site
to ensure that you receive the most current information concerning that problem.

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name, trademark manufacturer, or otherwise, does not constitute or imply
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Neither UNIRAS or NISCC shall also accept responsibility for any errors
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with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST)
and has contacts with other international Incident Response Teams (IRTs) in
order to foster cooperation and coordination in incident prevention, to prompt
rapid reaction to incidents, and to promote information sharing amongst its
members and the community at large.
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<End of UNIRAS Briefing>
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