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.
The product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Quagga | Quagga | * | 1.2.2 (including) |
| Quagga | Ubuntu | artful | * |
| Quagga | Ubuntu | devel | * |
| Quagga | Ubuntu | trusty | * |
| Quagga | Ubuntu | upstream | * |
| Quagga | Ubuntu | xenial | * |