Vulnerability Monitor

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CVE-2015-1558

Asterisk Open Source 12.x before 12.8.1 and 13.x before 13.1.1, when using the PJSIP channel driver, does not properly reclaim RTP ports, which allows remote authenticated users to cause a denial of service (file descriptor consumption) via an SDP offer containing only incompatible codecs.

Security Impact Summary

CVE-2015-1558 is a security vulnerability that . Impacting 1 product from digium organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2015, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2015-02-09T11:59:00.067

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 3.5 (LOW)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

6.8

Impact Score

2.9

Weaknesses

Type: Primary
CWE-399

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	digium	asterisk	12.0.0	Yes
Application	digium	asterisk	12.1.0	Yes
Application	digium	asterisk	12.1.0	Yes
Application	digium	asterisk	12.1.0	Yes
Application	digium	asterisk	12.1.0	Yes
Application	digium	asterisk	12.1.1	Yes
Application	digium	asterisk	12.2.0	Yes
Application	digium	asterisk	12.2.0	Yes
Application	digium	asterisk	12.2.0	Yes
Application	digium	asterisk	12.2.0	Yes
Application	digium	asterisk	12.3.0	Yes
Application	digium	asterisk	12.3.0	Yes
Application	digium	asterisk	12.3.0	Yes
Application	digium	asterisk	12.3.1	Yes
Application	digium	asterisk	12.3.2	Yes
Application	digium	asterisk	12.4.0	Yes
Application	digium	asterisk	12.4.0	Yes
Application	digium	asterisk	12.5.0	Yes
Application	digium	asterisk	12.5.0	Yes
Application	digium	asterisk	12.6.0	Yes
Application	digium	asterisk	12.6.0	Yes
Application	digium	asterisk	12.7.0	Yes
Application	digium	asterisk	12.7.0	Yes
Application	digium	asterisk	12.7.0	Yes
Application	digium	asterisk	12.8.0	Yes
Application	digium	asterisk	12.8.0	Yes
Application	digium	asterisk	12.8.0	Yes
Application	digium	asterisk	12.8.1	Yes
Application	digium	asterisk	13.0.0	Yes
Application	digium	asterisk	13.1.0	Yes
Application	digium	asterisk	13.1.0	Yes
Application	digium	asterisk	13.1.0	Yes
Application	digium	asterisk	13.2.0	Yes
Application	digium	asterisk	13.2.0	Yes

References

http://downloads.asterisk.org/pub/security/AST-2015-001.html Vendor Advisory ([email protected])
http://seclists.org/fulldisclosure/2015/Jan/116 ([email protected])
http://www.securityfocus.com/archive/1/534573/100/0/threaded ([email protected])
http://www.securitytracker.com/id/1031661 ([email protected])
http://downloads.asterisk.org/pub/security/AST-2015-001.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2015/Jan/116 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/534573/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1031661 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For digium's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.