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[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.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

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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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