Short Name |
APP:MISC:QUAGGA-BGP-DOS |
---|---|
Severity |
Minor |
Recommended |
Yes |
Recommended Action |
Drop |
Category |
APP |
Keywords |
Quagga BGP Update Denial Of Service |
Release Date |
2018/01/22 |
Update Number |
3028 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
This signature detects attempts to exploit a known vulnerability against Quagga, an open source network routing software. A successful attack can result in a denial-of-service condition.
The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote attackers to cause a denial of service (session drop) via BGP UPDATE messages, because AS_PATH size calculation for long paths counts certain bytes twice and consequently constructs an invalid message.