CVE-2015-1558: Digium Asterisk

Low severity, CVSS 3.5. EPSS: 3% chance of exploitation in the next 30 days.

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.

Affected products

• Digium Asterisk: version 12.0.0 only; version 12.1.0 only; version 12.1.1 only; version 12.2.0 only; version 12.3.0 only; version 12.3.1 only; …

Published 2015-02-09. Last modified 2026-06-17.