Vulnerability CVE-2019-16159
Published: 2019-09-09

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.

Type:

CWE-120

 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'))

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
NIC -> BIRD 

 References:
http://bird.network.cz
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00063.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00065.html
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
https://gitlab.labs.nic.cz/labs/bird/commit/1657c41c96b3c07d9265b07dd4912033ead4124b
https://gitlab.labs.nic.cz/labs/bird/commit/8388f5a7e14108a1458fea35bfbb5a453e2c563c
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4F23NNAPXX65MGJQBPPTVGRV3T4XCKBV/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MCVNQJBZYGGNAJNGOFEBE3IAJME2QIZB/
https://seclists.org/bugtraq/2019/Sep/34
https://www.debian.org/security/2019/dsa-4528
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