CVE-2011-2216

Name: CVE-2011-2216
Creator: NVD / NIST
Published: 2011-06-06T19:55:03.77+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.62%

Last modified Jun 16, 2026

CVE-2011-2216 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.62% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

4.62%

90.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Digium	Asterisk	1.8.0
Digium	Asterisk	1.8.1
Digium	Asterisk	1.8.1.1
Digium	Asterisk	1.8.1.2
Digium	Asterisk	1.8.2
Digium	Asterisk	1.8.2.1
Digium	Asterisk	1.8.2.2
Digium	Asterisk	1.8.2.3
Digium	Asterisk	1.8.2.4
Digium	Asterisk	1.8.3
Digium	Asterisk	1.8.3.1
Digium	Asterisk	1.8.3.2
Digium	Asterisk	1.8.3.3
Digium	Asterisk	1.8.4
Digium	Asterisk	1.8.4.1

References

Timeline

Published: Jun 6, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-2216?

How severe is CVE-2011-2216?

Severity scoring for CVE-2011-2216 is pending analysis. The EPSS model estimates a 4.62% probability of exploitation in the next 30 days.

How do I fix CVE-2011-2216?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-2216?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST