Changelog
quagga (0.99.17-2+squeeze3) stable-security; urgency=high
* SECURITY:
This is a backport of the security patches of Quagga 0.99.19 and 0.99.20:
- The vulnerabilities CVE-2011-3324 and CVE-2011-3323 are related to the
IPv6 routing protocol (OSPFv3) implemented in ospf6d daemon. Receiving
modified Database Description and Link State Update messages,
respectively, can result in denial of service in IPv6 routing.
- The vulnerability CVE-2011-3325 is a denial of service vulnerability
related to Hello message handling by the OSPF service. As Hello messages
are used to initiate adjacencies, exploiting the vulnerability may be
feasible from the same broadcast domain without an established adjacency.
A malformed packet may result in denial of service in IPv4 routing.
- The vulnerability CVE-2011-3326 results from the handling of LSA (Link
State Advertisement) states in the OSPF service. Receiving a modified
Link State Update message with malicious state information can result in
denial of service in IPv4 routing.
- The vulnerability CVE-2011-3327 is related to the extended communities
handling in BGP messages. Receiving a malformed BGP update can result in
a buffer overflow and disruption of IPv4 routing.
-- Christian Hammers <email address hidden> Sun, 02 Oct 2011 01:00:22 +0200
