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Message-ID: <m1AtkQ9-000pCVC__43738.323954358$1077210912@finlandia.Infodrom.North.DE>
Date: Thu, 19 Feb 2004 10:24:37 +0100 (CET)
From: joey@...odrom.org (Martin Schulze)
To: bugtraq@...urityfocus.com
Subject: [SECURITY] [DSA 442-1] New Linux 2.4.17 packages fix local root exploits and more (s390)


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Debian Security Advisory DSA 442-1                     security@...ian.org
http://www.debian.org/security/                             Martin Schulze
February 19th, 2004                     http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : kernel-patch-2.4.17-s390, kernel-image-2.4.17-s390
Vulnerability  : several
Problem-Type   : local, remote
Debian-specific: no
CVE ID         : CAN-2003-0001 CAN-2003-0244 CAN-2003-0246 CAN-2003-0247 CAN-2003-0248 CAN-2003-0364 CAN-2003-0961 CAN-2003-0985 CAN-2004-0077 CVE-2002-0429

Several security related problems have been fixed in the Linux kernel
2.4.17 used for the S/390 architecture, mostly by backporting fixes
from 2.4.18 and incorporating recent security fixes.  The corrections
are listed below with the identification from the Common
Vulnerabilities and Exposures (CVE) project:

CAN-2002-0429:

   The iBCS routines in arch/i386/kernel/traps.c for Linux kernels
   2.4.18 and earlier on x86 systems allow local users to kill
   arbitrary processes via a a binary compatibility interface (lcall)

CAN-2003-0001:

   Multiple ethernet network interface card (NIC) device drivers do
   not pad frames with null bytes, which allows remote attackers to
   obtain information from previous packets or kernel memory by using
   malformed packets, as demonstrated by Etherleak.

CAN-2003-0244:

   The route cache implementation in Linux 2.4, and the Netfilter IP
   conntrack module, allows remote attackers to cause a denial of
   service (CPU consumption) via packets with forged source addresses
   that cause a large number of hash table collisions related to the
   PREROUTING chain

CAN-2003-0246:

   The ioperm system call in Linux kernel 2.4.20 and earlier does not
   properly restrict privileges, which allows local users to gain read
   or write access to certain I/O ports.

CAN-2003-0247:

   A vulnerability in the TTY layer of the Linux kernel 2.4 allows
   attackers to cause a denial of service ("kernel oops").

CAN-2003-0248:

   The mxcsr code in Linux kernel 2.4 allows attackers to modify CPU
   state registers via a malformed address.

CAN-2003-0364:

   The TCP/IP fragment reassembly handling in the Linux kernel 2.4
   allows remote attackers to cause a denial of service (CPU
   consumption) via certain packets that cause a large number of hash
   table collisions

CAN-2003-0961:

   An integer overflow in brk() system call (do_brk() function) for
   Linux allows a local attacker to gain root privileges.  Fixed
   upstream in Linux 2.4.23.

CAN-2003-0985:

   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.  Fixed upstream in Linux 2.4.24.

CAN-2004-0077:

   Paul Starzetz and Wojciech Purczynski of isec.pl discovered a
   critical security vulnerability in the memory management code of
   Linux inside the mremap(2) system call.  Due to missing function
   return value check of internal functions a local attacker can gain
   root privileges.  Fixed upstream in Linux 2.4.25 and 2.6.3.

For the stable distribution (woody) these problems have been fixed in
version 2.4.17-2.woody.3 of s390 images and in version
0.0.20020816-0.woody.2 of the patch packages.

For the unstable distribution (sid) these problems will be fixed soon.

We recommend that you upgrade your Linux kernel packages immediately.


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-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816-0.woody.2.dsc
      Size/MD5 checksum:      754 8f59252c74198c796f544ac312cbf522
    http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816-0.woody.2.diff.gz
      Size/MD5 checksum:     5824 81d3c045df500f3e2da56de87b4c434d
    http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816.orig.tar.gz
      Size/MD5 checksum:   338001 5979fbe7c3325033536dfd3914e22dbd

    http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-image-2.4.17-s390_2.4.17-2.woody.3.dsc
      Size/MD5 checksum:      793 fd4b67d1ba928ded93263c2d95327b65
    http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-image-2.4.17-s390_2.4.17-2.woody.3.tar.gz
      Size/MD5 checksum:     7866 50f9e176f8d7fbf6eb6124bf864e6c48

  Architecture independent components:

    http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816-0.woody.2_all.deb
      Size/MD5 checksum:   300766 03b0017cad1c479c4109c0ad5f072ab0

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-headers-2.4.17_2.4.17-2.woody.3_s390.deb
      Size/MD5 checksum:  3335312 84663c81b952cfa9407c84985f5623d7
    http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-image-2.4.17-s390_2.4.17-2.woody.3_s390.deb
      Size/MD5 checksum:  1342758 b5cd48b7cde59c3893c983d95e451a23


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

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