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
The product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Quagga | Quagga | * | 1.2.2 (including) |
| Quagga | Ubuntu | artful | * |
| Quagga | Ubuntu | devel | * |
| Quagga | Ubuntu | esm-infra/xenial | * |
| Quagga | Ubuntu | trusty | * |
| Quagga | Ubuntu | upstream | * |
| Quagga | Ubuntu | xenial | * |
References
- http://savannah.nongnu.org/forum/forum.php?forum_id=9095
- http://www.kb.cert.org/vuls/id/940439
- https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdf
- https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txt
- https://lists.debian.org/debian-lts-announce/2018/02/msg00021.html
- https://security.gentoo.org/glsa/201804-17
- https://usn.ubuntu.com/3573-1/
- https://www.debian.org/security/2018/dsa-4115
- http://savannah.nongnu.org/forum/forum.php?forum_id=9095
- http://www.kb.cert.org/vuls/id/940439
- https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdf
- https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txt
- https://lists.debian.org/debian-lts-announce/2018/02/msg00021.html
- https://security.gentoo.org/glsa/201804-17
- https://usn.ubuntu.com/3573-1/
- https://www.debian.org/security/2018/dsa-4115