CVE-2019-16159 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5