CVE-2012-2947: Debian Linux

Low severity, CVSS 2.6. EPSS: 2.3% chance of exploitation in the next 30 days.

chan_iax2.c in the IAX2 channel driver in Certified Asterisk 1.8.11-cert before 1.8.11-cert2 and Asterisk Open Source 1.8.x before 1.8.12.1 and 10.x before 10.4.1, when a certain mohinterpret setting is enabled, allows remote attackers to cause a denial of service (daemon crash) by placing a call on hold.

Affected products

• Debian Debian Linux: version 6.0 only
• Digium Asterisk: version 1.8.0 only; version 1.8.1 only; version 1.8.1.1 only; version 1.8.1.2 only; version 1.8.2 only; version 1.8.2.1 only; …
• Digium Certified Asterisk: version 1.8.11 only

Published 2012-06-02. Last modified 2026-06-16.