Red Hat Bugzilla – Bug 991457
CVE-2013-0149 quagga (ospfd): Possibility to use invalid / duplicate LSA information (VU#229804)
Last modified: 2013-08-02 09:24:04 EDT
A security flaw was found in the way how certain Open Shortest Path First (OSPF) protocol implementations used to perform Link State Advertisement (LSA) identifiers lookup in the LSA database during the routing table calculation phase (certain implementations searched for LSA id using only Link State ID). On certain implementations a remote attacker could use this flaw to subvert the routing table of the victim router by sending false link state advertisements on behalf of other routers (resulting into situation where the victim router would drop the entire table [denial of service] or re-route the network traffic).
The OSPF protocol implementation in Quagga routing suite was not vulnerable to this problem:
since it performs LSA id lookup based on two identifiers - (Router-ID, LS-ID) pair.
Not vulnerable. This issue did not affect the versions of quagga as shipped with Red Hat Enterprise Linux 5 and 6, since the OSPF protocol implementation in Quagga performs LSA id lookup based on two identifiers - (Router-ID, LS-ID) pair.