A vulnerability has been reported in Quagga, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error in the "bgp_capability_orf()" function when parsing OPEN messages containing an ORF capability TLV. This can be exploited to cause a buffer overflow via a specially crafted packet.
Successful exploitation requires control of a pre-configured BGP peer.
The vulnerability is reported in versions 0.99.20.1 and prior.
Solution: Restrict access to trusted BGP peers only.
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Subject: Quagga "bgp_capability_orf()" Denial of Service Vulnerability
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