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CESA-2003:305: zebra security update

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CESA-2003:305: zebra security update

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
12/15/2003
Created
07/25/2018
Added
03/12/2010
Modified
07/04/2017

Description

Updated zebra packages that close a locally-exploitable and a remotely-exploitable denial of service vulnerability are now available.

Zebra an open source implementation of TCP/IP routing software. Jonny Robertson reported that Zebra can be remotely crashed if a Zebra password has been enabled and a remote attacker can connect to the Zebra telnet management port. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2003-0795 to this issue. Herbert Xu reported that Zebra can accept spoofed messages sent on the kernel netlink interface by other users on the local machine. This could lead to a local denial of service attack. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2003-0858 to this issue. Users of Zebra should upgrade to these erratum packages, which contain a patch preventing Zebra from crashing when it receives a telnet option delimiter without any option data, and a patch that checks that netlink messages actually came from the kernel.

Solution(s)

  • centos-upgrade-zebra

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