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Conectiva Linux Advisory: zebra

Nov 21, 2003, 15:58 (0 Talkback[s])

CONECTIVA LINUX SECURITY ANNOUNCEMENT
PACKAGE : zebra
SUMMARY : Fix for denial of service vulnerabilities
DATE : 2003-11-20 11:31:00
ID : CLA-2003:786
RELEVANT RELEASES : 9

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.rpm
ftp://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


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
Copyright (c) 2003 Conectiva Inc.
http://www.conectiva.com