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CVE-2016-9937 Details

Description

An issue was discovered in Asterisk Open Source 13.12.x and 13.13.x before 13.13.1 and 14.x before 14.2.1. If an SDP offer or answer is received with the Opus codec and with the format parameters separated using a space the code responsible for parsing will recursively call itself until it crashes. This occurs as the code does not properly handle spaces separating the parameters. This does NOT require the endpoint to have Opus configured in Asterisk. This also does not require the endpoint to be authenticated. If guest is enabled for chan_sip or anonymous in chan_pjsip an SDP offer or answer is still processed and the crash occurs.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://downloads.asterisk.org/pub/security/AST-2016-008-13.diff	CVE	PatchVendor Advisory
http://downloads.asterisk.org/pub/security/AST-2016-008-14.diff	CVE	PatchVendor Advisory
http://downloads.asterisk.org/pub/security/AST-2016-008.html	CVE	PatchVendor Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-26579	CVE	PatchVendor Advisory
http://www.securityfocus.com/bid/94792	CVE	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037407	CVE
http://downloads.asterisk.org/pub/security/AST-2016-008-13.diff	[email protected]	PatchVendor Advisory
http://downloads.asterisk.org/pub/security/AST-2016-008-14.diff	[email protected]	PatchVendor Advisory
http://downloads.asterisk.org/pub/security/AST-2016-008.html	[email protected]	PatchVendor Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-26579	[email protected]	PatchVendor Advisory
http://www.securityfocus.com/bid/94792	[email protected]	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037407	[email protected]

see all 12 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]

Affected Products

Product	Versions
digium asterisk	13.12 13.13 14.0 14.1 14.01
CPE cpe:2.3:a:digium:asterisk:13.12:::::::* cpe:2.3:a:digium:asterisk:13.13:::::::* cpe:2.3:a:digium:asterisk:14.0:::::::* cpe:2.3:a:digium:asterisk:14.1:::::::* cpe:2.3:a:digium:asterisk:14.01:::::::* cpe:2.3:a:digium:asterisk:14.1.1:::::::* cpe:2.3:a:digium:asterisk:14.1.2:::::::* cpe:2.3:a:digium:asterisk:14.02:::::::* cpe:2.3:a:digium:asterisk:14.2:::::::* Remediation No remediation found in references.

Product

Versions

digium asterisk

13.12

13.13

14.0

14.1

14.01

CPE

cpe:2.3:a:digium:asterisk:13.12:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:13.13:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:14.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:14.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:14.01:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:14.1.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:14.1.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:14.02:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:14.2:*:*:*:*:*:*:*

Remediation

No remediation found in references.

Change History

8 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 6, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jul 27, 2017	CVE Modified	[email protected]
Jan 3, 2017	Reanalysis	[email protected]
Dec 22, 2016	Initial Analysis	[email protected]
Dec 16, 2016	CVE Modified	[email protected]