The Quagga BGP daemon bgpd prior to version 1.2.3 may be vulnerable to multiple issues that may result in denial of service, information disclosure, or remote code execution.
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer - CVE-2018-5378 (Quagga-2018-0543)
The Quagga BGP daemon, bgpd, does not properly bounds check the data sent with a NOTIFY to a peer, if an attribute length is invalid. Arbitrary data from the bgpd process may be sent over the network to a peer and/or it may crash.
An unauthenticated, remote attacker may be able to use crafted input to result in a crash of bgpd or even allow a remote attacker to gain control of an affected bgpd process.
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The Quagga developers thank Alban Browaeys, Balaji Gurudoss, Borg, Scott Leggett and Debian QA Group, Eugene Bogomazov, Evgeny Uskov, Gerrie Roos, Mathieu Jadin, Pier Carlo Chiodi, and Rolf Eike Beer.