CVE-2011-2665

Description

reqresp_parser.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.4.3 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a SIP packet with a Contact header that lacks a < (less than) character.

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 2.31% Top 20%

Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory asterisk.org Vendor Advisory secunia.com

Affected: n/a n/a

References

Link	Tags
http://downloads.asterisk.org/pub/security/AST-2011-009.html	vendor advisory
http://secunia.com/advisories/45239	third party advisory
http://www.debian.org/security/2011/dsa-2276	vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062628.html	vendor advisory
http://downloads.asterisk.org/pub/security/AST-2011-009-1.8.diff	patch
http://secunia.com/advisories/45048	third party advisory vendor advisory
http://secunia.com/advisories/45201	third party advisory

Frequently Asked Questions

What is the severity of CVE-2011-2665?: CVE-2011-2665 has been scored as a medium severity vulnerability.
How to fix CVE-2011-2665?: To fix CVE-2011-2665, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-2665 being actively exploited in the wild?: It is possible that CVE-2011-2665 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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