CVE-2017-16227

HIGH

Quagga < 1.2.2 - Denial of Service via BGP UPDATE Message AS_PATH Size Miscount

Title source: llm
STIX 2.1

Description

The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote attackers to cause a denial of service (session drop) via BGP UPDATE messages, because AS_PATH size calculation for long paths counts certain bytes twice and consequently constructs an invalid message.

References (5)

Core 5
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugs.debian.org/879474
Issue Tracking, Third Party Advisory x_refsource_misc
http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt
Issue Tracking, Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2017/dsa-4011
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html

Scores

CVSS v3 7.5
EPSS 0.1879
EPSS Percentile 96.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-20
Status published
Products (3)
debian/debian_linux 8.0
debian/debian_linux 9.0
quagga/quagga < 1.2.1
Published Oct 29, 2017
Tracked Since Feb 18, 2026