CVE:CVE-2012-0255
CNNVD:CNNVD-201204-068
Quagga是美国软件开发者Kunihiro Ishiguro所研发的一款路由软件套件。该套件可在多种平台上实现OSPFv2、OSPFv3、RIP v1/v2等协议，并提供路由重分布、路由映射等功能。
Quagga 0.99.20.1之前版本中bgpd的BGP实现中存在漏洞，该漏洞源于对OPEN信息未正确使用信息缓冲区。远程攻击者可利用该漏洞借助与畸形Four-octet AS Number Capability（也称AS4性能）相关的信息，导致拒绝服务（断言失败和守护进程退出）。
solution:Upgrade quagga quagga to a higher version than 0.99.20,0.95,0.96,0.96.1,0.96.2,0.96.3,0.96.4,0.96.5,0.97.0,0.97.1,0.97.2,0.97.3,0.97.4,0.97.5,0.98.0,0.98.1,0.98.2,0.98.3,0.98.4,0.98.5,0.98.6,0.99.1,0.99.2,0.99.3,0.99.4,0.99.5,0.99.6,0.99.7,0.99.8,0.99.9,0.99.10,0.99.11,0.99.12,0.99.13,0.99.14,0.99.15,0.99.16,0.99.17,0.99.18,0.99.19,and avoid the version (,0.99.20],0.95,0.96,0.96.1,0.96.2,0.96.3,0.96.4,0.96.5,0.97.0,0.97.1,0.97.2,0.97.3,0.97.4,0.97.5,0.98.0,0.98.1,0.98.2,0.98.3,0.98.4,0.98.5,0.98.6,0.99.1,0.99.2,0.99.3,0.99.4,0.99.5,0.99.6,0.99.7,0.99.8,0.99.9,0.99.10,0.99.11,0.99.12,0.99.13,0.99.14,0.99.15,0.99.16,0.99.17,0.99.18,0.99.19