Date: Thu, 20 Nov 2003 11:32:44 -0200
From: Conectiva Updates <secure@conectiva.com.br>
To: conectiva-updates@papaleguas.conectiva.com.br, lwn@lwn.net,
Subject: [CLA-2003:786] Conectiva Security Announcement - zebra
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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : zebra
SUMMARY : Fix for denial of service vulnerabilities
DATE : 2003-11-20 11:31:00
ID : CLA-2003:786
RELEVANT
RELEASES : 9
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DESCRIPTION
Zebra[1] is a multi-server routing software package which provides
TCP/IP based routing protocols also with IPv6 support such as RIP,
OSPF, BGP and so on.
This update fixes the following vulnerabilities:
1) Denial of service via telnet CLI interface (CAN-2003-0795)[2][3]
Remote attackers can cause a denial of service via a malformed telnet
command to the telnet CLI port.
2) Denial of service via netlink messages (CAN-2003-0858)[4]
Local users to cause a denial of service by sending spoofed messages
to zebra as other users via the kernel netlink interface.
SOLUTION
It is recommended that all users of the zebra package update their
packages. After the update, the service will be automatically
restarted if necessary.
REFERENCES
1. http://www.zebra.org/
2. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0795
3. http://marc.theaimsgroup.com/?l=bugtraq&m=106883387304266&w=2
4. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0858
UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/9/SRPMS/zebra-0.93b-27301U90_1cl.src.rpmftp://atualizacoes.conectiva.com.br/9/RPMS/zebra-0.93b-27301U90_1cl.i386.rpm
ADDITIONAL INSTRUCTIONS
The apt tool can be used to perform RPM packages upgrades:
- 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
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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
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All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en
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Copyright (c) 2003 Conectiva Inc.
http://www.conectiva.com
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