CVE-2007-1561: Asterisk

High severity, CVSS 7.8. EPSS: 14.5% chance of exploitation in the next 30 days.

The channel driver in Asterisk before 1.2.17 and 1.4.x before 1.4.2 allows remote attackers to cause a denial of service (crash) via a SIP INVITE message with an SDP containing one valid and one invalid IP address.

Affected products

• Asterisk Asterisk: version 1.2.14 only; version 1.2.15 only; version 1.2.16 only; version 1.4.1 only

Published 2007-03-21. Last modified 2026-06-16.