CVE-2009-4055

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-12-02 · updated 2026-06-16

Description

rtp.c in Asterisk Open Source 1.2.x before 1.2.37, 1.4.x before 1.4.27.1, 1.6.0.x before 1.6.0.19, and 1.6.1.x before 1.6.1.11; Business Edition B.x.x before B.2.5.13, C.2.x.x before C.2.4.6, and C.3.x.x before C.3.2.3; and s800i 1.3.x before 1.3.0.6 allows remote attackers to cause a denial of service (daemon crash) via an RTP comfort noise payload with a long data length.

Affected products

Digium Asterisk: 1.2.0, 1.2.0-beta1, 1.2.0-beta2, 1.2.0-rc1, 1.2.0-rc2, 1.2.1 (+210)
Digium S800I: 1.3.0, 1.3.0.2, 1.3.0.3, 1.3.0.4

References

http://downloads.asterisk.org/pub/security/AST-2009-010-1.2.diff.txt
http://downloads.asterisk.org/pub/security/AST-2009-010-1.4.diff.txt
http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.0.diff.txt
http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.1.diff.txt
http://downloads.digium.com/pub/security/AST-2009-010.html
http://secunia.com/advisories/37530
http://secunia.com/advisories/37677
http://secunia.com/advisories/37708
http://securitytracker.com/id?1023249
http://www.debian.org/security/2009/dsa-1952
http://www.osvdb.org/60569
http://www.redhat.com/archives/fedora-package-announce/2009-December/msg00759.html

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