An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c processes malformed requests with no attributes, leading to a NULL pointer dereference.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Frrouting | Frrouting | * | 9.0 (including) |
| Red Hat Enterprise Linux 8 | RedHat | frr-0:7.5.1-22.el8 | * |
| Red Hat Enterprise Linux 9 | RedHat | frr-0:8.5.3-4.el9 | * |
| Frr | Ubuntu | bionic | * |
| Frr | Ubuntu | esm-apps/focal | * |
| Frr | Ubuntu | focal | * |
| Frr | Ubuntu | jammy | * |
| Frr | Ubuntu | lunar | * |
| Frr | Ubuntu | trusty | * |
| Frr | Ubuntu | upstream | * |
| Frr | Ubuntu | xenial | * |
| Quagga | Ubuntu | bionic | * |
| Quagga | Ubuntu | trusty | * |
| Quagga | Ubuntu | xenial | * |
Potential Mitigations
References
- https://github.com/FRRouting/frr/pull/13222/commits/cfd04dcb3e689754a72507d086ba3b9709fc5ed8
- https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JLG64IF3FU7V76K4TKCCXVNEE6P2VUDO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LMJNX44SMJM25JZO7XWHDQCOB4SNJPIE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXR6PIVY4SWO7HDT4EY733H4X32SCPM4/
- https://github.com/FRRouting/frr/pull/13222/commits/cfd04dcb3e689754a72507d086ba3b9709fc5ed8
- https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JLG64IF3FU7V76K4TKCCXVNEE6P2VUDO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LMJNX44SMJM25JZO7XWHDQCOB4SNJPIE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXR6PIVY4SWO7HDT4EY733H4X32SCPM4/