CVE-2013-6051: Quagga

Medium severity, CVSS 4.3. EPSS: 2.2% chance of exploitation in the next 30 days.

The bgp_attr_unknown function in bgp_attr.c in Quagga 0.99.21 does not properly initialize the total variable, which allows remote attackers to cause a denial of service (bgpd crash) via a crafted BGP update.

Affected products

• Quagga Quagga: version 0.99.21 only

Published 2013-12-14. Last modified 2026-06-16.