DSA 482-1: New Linux 2.4.17 packages fix local root exploit
Posted on: 04/14/2004 01:31 PM

A kernel update for the kernel-source-2.4.17, kernel-patch-2.4.17-apus, kernel-patch-2.4.17-s390, and kernel-image-2.4.17-s390 packages is now available for Debian GNU/Linux

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Debian Security Advisory DSA 482-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
April 14th, 2004 http://www.debian.org/security/faq
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Package : kernel-source-2.4.17 kernel-patch-2.4.17-apus kernel-patch-2.4.17-s390 kernel-image-2.4.17-s390
Vulnerability : several vulnerabilities
Problem-Type : local
Debian-specific: no
CVE ID : CAN-2004-0003 CAN-2004-0010 CAN-2004-0109 CAN-2004-0177 CAN-2004-0178

Several serious problems have been discovered in the Linux kernel. This update takes care of Linux 2.4.17 for the PowerPC/apus and S/390 architectures. The Common Vulnerabilities and Exposures project identifies the following problems that will be fixed with this update:

CAN-2004-0003

A vulnerability has been discovered in the R128 drive in the Linux kernel which could potentially lead an attacker to gain unauthorised privileges. Alan Cox and Thomas Biege developed a correction for this

CAN-2004-0010

Arjan van de Ven discovered a stack-based buffer overflow in the ncp_lookup function for ncpfs in the Linux kernel, which could lead an attacker to gain unauthorised privileges. Petr Vandrovec developed a correction for this.

CAN-2004-0109

zen-parse discovered a buffer overflow vulnerability in the ISO9660 filesystem component of Linux kernel which could be abused by an attacker to gain unauthorised root access. Sebastian Krahmer and Ernie Petrides developed a correction for this.

CAN-2004-0177

Solar Designer discovered an information leak in the ext3 code of Linux. In a worst case an attacker could read sensitive data such as cryptographic keys which would otherwise never hit disk media. Theodore Ts'o developed a correction for this.

CAN-2004-0178

Andreas Kies discovered a denial of service condition in the Sound Blaster driver in Linux. He also developed a correction for this.

These problems will also be fixed by upstream in Linux 2.4.26 and future versions of 2.6.

The following security matrix explains which kernel versions for which architectures are already fixed.

Architecture stable (woody) unstable (sid)
source 2.4.17-1woody3 2.4.25-3
powerpc/apus 2.4.17-5 2.4.25-2
s390 2.4.17-2.woody.4 2.4.25-2 (and probably 2.4.21-3)

We recommend that you upgrade your kernel packages immediately, either with a Debian provided kernel or with a self compiled one.


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-source-2.4.17/kernel-source-2.4.17_2.4.17-1woody3.dsc
Size/MD5 checksum: 690 222d67d058984eef34ef3af56ad82720
http://security.debian.org/pool/updates/main/k/kernel-source-2.4.17/kernel-source-2.4.17_2.4.17-1woody3.diff.gz
Size/MD5 checksum: 41918 dce13eeca598d548e390a72fed76728f
http://security.debian.org/pool/updates/main/k/kernel-source-2.4.17/kernel-source-2.4.17_2.4.17.orig.tar.gz
Size/MD5 checksum: 29445154 d5de2a4dc49e32c37e557ef856d5d132

http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-apus/kernel-patch-2.4.17-apus_2.4.17-5.dsc
Size/MD5 checksum: 673 f7a70b5e604e74feedba42eb41608a13
http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-apus/kernel-patch-2.4.17-apus_2.4.17-5.tar.gz
Size/MD5 checksum: 490001 54f9f6b973b4c945d548510290cb122a

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.3.dsc
Size/MD5 checksum: 754 d9b64c461d849aeab5a1bb71322f14ec
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.3.diff.gz
Size/MD5 checksum: 6254 85fd6863f93bfa474b854f4dfbda4034
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.4.dsc
Size/MD5 checksum: 799 51d3be5adf8d79e3a0f3045f2235c52a
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.4.tar.gz
Size/MD5 checksum: 8289 9b02431ce5f6741183b2614d5d9f9f4a


Architecture independent components:

http://security.debian.org/pool/updates/main/k/kernel-source-2.4.17/kernel-doc-2.4.17_2.4.17-1woody3_all.deb
Size/MD5 checksum: 1720294 3b6e8a510996bebd066d1cda8bac41eb
http://security.debian.org/pool/updates/main/k/kernel-source-2.4.17/kernel-source-2.4.17_2.4.17-1woody3_all.deb
Size/MD5 checksum: 23880582 542792a28d1fc90844f9b51abe84f90e

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.3_all.deb
Size/MD5 checksum: 300768 c8116357d604508ff0e50cc8295005f0

PowerPC architecture:

http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-apus/kernel-headers-2.4.17-apus_2.4.17-5_powerpc.deb
Size/MD5 checksum: 3366150 3331dac5b42b3cd42e0dcdc7ad574f60
http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-apus/kernel-image-2.4.17-apus_2.4.17-5_powerpc.deb
Size/MD5 checksum: 2211544 f24006c8b07774bccb2ad22af4f95465
http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-apus/kernel-image-apus_2.4.17-5_powerpc.deb
Size/MD5 checksum: 4498 89ac0312fa91e6911ed366dd22bef2b9
http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-apus/kernel-patch-2.4.17-apus_2.4.17-5_powerpc.deb
Size/MD5 checksum: 490786 228a12c3a523f86f089121dca964bac7

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.4_s390.deb
Size/MD5 checksum: 3335728 14f64e559f9ccb97876df9a0248b8069
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.4_s390.deb
Size/MD5 checksum: 1343254 25bad4dcb964e713467344bf8a5fd31f


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


Printed from Linux Compatible (http://www.linuxcompatible.org/news/story/dsa_482_1_new_linux_2417_packages_fix_local_root_exploit.html)