Two vulnerabilities have been reported in Quagga, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.
1) A NULL-pointer dereference error when parsing Autonomous System (AS) paths can be exploited to crash the "bgpd" daemon via a specially crafted BGP update request from a configured peer.
2) A boundary error when processing Route-Refresh messages can be exploited to cause a stack-based buffer overflow via a specially crafted Outbound Route Filtering (ORF) record sent from a configured peer.
Successful exploitation may allow execution of arbitrary code.
The vulnerabilities are reported in versions prior to 0.99.17.
Solution: Update to version 0.99.17.
Provided and/or discovered by: The vendor credits the CROSS team.
Original Advisory: http://www.quagga.net/news2.php?y=2010&m=8&d=19#id1282241100
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Subject: Quagga BGP Daemon Denial of Service and Buffer Overflow Vulnerabilities
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