CVE-2009-1572

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-05-06 · updated 2026-06-16

Description

The BGP daemon (bgpd) in Quagga 0.99.11 and earlier allows remote attackers to cause a denial of service (crash) via an AS path containing ASN elements whose string representation is longer than expected, which triggers an assert error.

Affected products

quagga: through 0.99.11; 0.95, 0.96, 0.96.1, 0.96.2, 0.96.3, 0.96.4 (+24)

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=526311
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
http://marc.info/?l=quagga-dev&m=123364779626078&w=2
http://secunia.com/advisories/34999
http://secunia.com/advisories/35061
http://secunia.com/advisories/35203
http://secunia.com/advisories/35685
http://thread.gmane.org/gmane.network.quagga.devel/6513
http://www.debian.org/security/2009/dsa-1788
http://www.mandriva.com/security/advisories?name=MDVSA-2009:109
http://www.openwall.com/lists/oss-security/2009/05/01/1
http://www.openwall.com/lists/oss-security/2009/05/01/2

Get alerted when CVE-2009-1572 or the next vulnerability affects your stack