CVE-2011-2216

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-06-06 · updated 2026-06-16

Description

reqresp_parser.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.4.2 does not initialize certain strings, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed Contact header.

Affected products

Digium Asterisk: 1.8.0, 1.8.0-beta1, 1.8.0-beta2, 1.8.0-beta3, 1.8.0-beta4, 1.8.0-beta5 (+25)

References

http://downloads.digium.com/pub/security/AST-2011-007.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062658.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062013.html
http://osvdb.org/72752
http://secunia.com/advisories/44828
http://securitytracker.com/id?1025598
http://www.securityfocus.com/archive/1/518236/100/0/threaded
http://www.securityfocus.com/bid/48096
https://exchange.xforce.ibmcloud.com/vulnerabilities/67812
http://downloads.digium.com/pub/security/AST-2011-007.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062658.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062013.html

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