RHEL 2.1 : zebra (RHSA-2003:305)

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Synopsis :

The remote Red Hat host is missing a security update.

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 CVE-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 CVE-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.

See also :

https://www.redhat.com/security/data/cve/CVE-2003-0795.html
https://www.redhat.com/security/data/cve/CVE-2003-0858.html
http://rhn.redhat.com/errata/RHSA-2003-305.html

Solution :

Update the affected zebra package.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)

Family: Red Hat Local Security Checks

Nessus Plugin ID: 12427 ()

Bugtraq ID:

CVE ID: CVE-2003-0795
CVE-2003-0858