Signature Detail
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Short Name |
APP:MISC:QUAGGA-BGP-CAP-DOS |
|---|---|
Severity |
Minor |
Recommended |
Yes |
Recommended Action |
Drop |
Category |
APP |
Keywords |
Quagga BGP Daemon bgp_capability_msg_parse Denial-of-Service |
Release Date |
2018/04/05 |
Update Number |
3053 |
Supported Platforms |
idp-4.0+, isg-3.4.139899+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
APP: Quagga BGP Daemon bgp_capability_msg_parse Denial-of-Service
This signature detects attempts to exploit a known vulnerability in the BGP Daemon of Quagga. Successful exploitation could result in denial-of-service conditions.
Extended Description
The Quagga BGP daemon (bgpd) prior to version 1.2.3 has a bug in its parsing of "Capabilities" in BGP OPEN messages, in the bgp_packet.c:bgp_capability_msg_parse function. The parser can enter an infinite loop on invalid capabilities if a Multi-Protocol capability does not have a recognized AFI/SAFI, causing a denial of service.
Affected Products
- Canonical ubuntu_linux 14.04
- Canonical ubuntu_linux 16.04
- Canonical ubuntu_linux 17.10
- Debian debian_linux 7.0
- Debian debian_linux 8.0
- Debian debian_linux 9.0
- Quagga quagga 1.2.2
References
- CVE: CVE-2018-5381