Buffer overflow in Nic Bird
CVE-2019-16159
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Nic Bird
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 29, 30
- openSUSE Backports Sle — versions 15.0
Weakness classification (CWE)
References
- gitlab.labs.nic.cz/labs/bird/commit/8388f5a7e14108a1458fea35bfbb5a453e2c563c (Patch, Third Party Advisory)
- gitlab.labs.nic.cz/labs/bird/commit/1657c41c96b3c07d9265b07dd4912033ead4124b (Patch, Third Party Advisory)
- trubka.network.cz/pipermail/bird-users/2019-September/013718.html (Vendor Advisory)
- trubka.network.cz/pipermail/bird-users/2019-September/013720.html (Vendor Advisory)
- trubka.network.cz/pipermail/bird-users/2019-September/013722.html (Vendor Advisory)
- bird.network.cz (Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- seclists.org/bugtraq/2019/Sep/34 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2019/dsa-4528 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-16159?
- CVE-2019-16159 is a high-severity vulnerability in Nic Bird, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2019-09-09.
- How severe is CVE-2019-16159?
- High severity. CVSS v3 base score is 7.5 out of 10.