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Home » Hacking News » [CLA-2002:553] Conectiva Linux Security Announcement - kernel 2.4

[CLA-2002:553] Conectiva Linux Security Announcement - kernel 2.4

by Nikola Strahija on December 17th, 2002 Christophe Devine reported[1] a vulnerability in versions prior to 2.4.20 of the linux kernel that could be exploited by a local non-root user to completely "freeze" the machine.


PACKAGE : kernel 2.4
SUMMARY : Local denial of service vulnerability
DATE : 2002-12-16 17:41:00
ID : CLA-2002:553
RELEVANT
RELEASES : 7.0, 8

- -------------------------------------------------------------------------

DESCRIPTION
The Linux kernel is responsible for handling the basic functions of
the Conectiva Linux operating system.

Christophe Devine reported[1] a vulnerability in versions prior to
2.4.20 of the linux kernel that could be exploited by a local
non-root user to completely "freeze" the machine. A local attacker
could exploit this vulnerability to cause a Denial of Service (DoS)
condition. This update fixes this problem.

Please note that the updated kernel packages here listed are
available in our update servers since November 20, 2002.


SOLUTION
All users should upgrade the kernel immediately.

IMPORTANT: it is not possible to use apt to apply kernel updates.
These packages have to be updated manually. Generic kernel update
instructions can be found in our updates page[2].

Kernel 2.2 users in Conectiva Linux 6.0 and 7.0 are also vulnerable
to this issue. It is recommended that these users upgrade to the
latest (2.4) kernel, but updated packages for the 2.2 series are
being prepared and will be released in a near future.


REFERENCES:
1.http://online.securityfocus.com/archive/1/299687/2002-11-11/2002-11-17/0
2.http://distro.conectiva.com.br/atualizacoes/?idioma=en


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-2.4.12-4U70_4cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-2.4.12-4U70_4cl.i586.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-2.4.12-4U70_4cl.i686.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-BOOT-2.4.12-4U70_4cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-doc-2.4.12-4U70_4cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-enterprise-2.4.12-4U70_4cl.i686.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-headers-2.4.12-4U70_4cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-smp-2.4.12-4U70_4cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-smp-2.4.12-4U70_4cl.i586.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-smp-2.4.12-4U70_4cl.i686.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/kernel-source-2.4.12-4U70_4cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/kernel-2.4.12-4U70_4cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-2.4.19-1U80_5cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-2.4.19-1U80_5cl.i586.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-2.4.19-1U80_5cl.i686.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-BOOT-2.4.19-1U80_5cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-doc-2.4.19-1U80_5cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-enterprise-2.4.19-1U80_5cl.i686.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-headers-2.4.19-1U80_5cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-rbc-2.4.19-1U80_5cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-smp-2.4.19-1U80_5cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-smp-2.4.19-1U80_5cl.i586.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-smp-2.4.19-1U80_5cl.i686.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/kernel-source-2.4.19-1U80_5cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/kernel-2.4.19-1U80_5cl.src.rpm


ADDITIONAL INSTRUCTIONS
Users of Conectiva Linux version 6.0 or higher may use apt to perform
upgrades of RPM packages:

- run: apt-get update
- after that, execute: apt-get upgrade

Detailed instructions reagarding the use of apt and upgrade examples
can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en


- -------------------------------------------------------------------------
All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en
- -------------------------------------------------------------------------
All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en

- -------------------------------------------------------------------------
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