Description
BIRD Internet Routing Daemon 1.6.x through 1.6.7 and 2.x through 2.0.5 has a stack-based buffer overflow. The BGP daemon's support for RFC 8203 administrative shutdown communication messages included an incorrect logical expression when checking the validity of an input message. Sending a shutdown communication with a sufficient message length causes a four-byte overflow to occur while processing the message, where two of the overflow bytes are attacker-controlled and two are fixed.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | bird2 | 2.0.6-1 | — |
| Debian 13 | bird2 | 2.0.6-1 | — |
| Debian 12 | bird | 1.6.8-1 | — |
| Debian 12 | bird2 | 2.0.6-1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP1 | bird | 1.6.8-bp151.2.3.1 | openSUSE-SU-2019:2180-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | bird3 | 3.1.0-1.1 | openSUSE-SU-2025:15072-1 |
| openSUSE Leap 15.1 | bird | 1.6.8-lp151.2.3.1 | openSUSE-SU-2019:2178-1 |
Advisories 3
- openSUSE-SU-2025:15072-1 bird3-3.1.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2019:2180-1 Security update for bird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2178-1 Security update for bird SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://gitlab.labs.nic.cz/labs/bird/commit/8388f5a7e14108a1458fea35bfbb5a453e2c563c
- https://gitlab.labs.nic.cz/labs/bird/commit/1657c41c96b3c07d9265b07dd4912033ead4124b
- http://trubka.network.cz/pipermail/bird-users/2019-September/013718.html
- http://trubka.network.cz/pipermail/bird-users/2019-September/013720.html
- http://trubka.network.cz/pipermail/bird-users/2019-September/013722.html
- http://bird.network.cz
- FEDORA-2019-ace80f492e vendor-advisory
- FEDORA-2019-b629e3b97f vendor-advisory
- 20190920 [SECURITY] [DSA 4528-1] bird security update mailing-list
- DSA-4528 vendor-advisory
- openSUSE-SU-2019:2178 vendor-advisory
- openSUSE-SU-2019:2180 vendor-advisory