CVE-2018-5381

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.

Weakness classification

• CWE-228: Improper Handling of Syntactically Invalid Structure
• CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

Primary references

• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory, US Government Resource
• cret@cert.org — Mitigation, Third Party Advisory
• cret@cert.org — Vendor Advisory
• cret@cert.org — Mailing List, Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, US Government Resource
• af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory