CVE-2013-2264: Asterisk Business Edition

Medium severity, CVSS 5.0. EPSS: 1.3% chance of exploitation in the next 30 days.

The SIP channel driver in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; Asterisk Business Edition (BE) C.3.x before C.3.8.1; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones exhibits different behavior for invalid INVITE, SUBSCRIBE, and REGISTER transactions depending on whether the user account exists, which allows remote attackers to enumerate account names by (1) reading HTTP status codes, (2) reading additional text in a 403 (aka Forbidden) response, or (3) observing whether certain retransmissions occur.

Affected products

• Asterisk Business Edition: version c.3.2.2 only; version c.3.3 only; version c.3.3.2 only
• Asterisk Certified Asterisk: version 1.8.15 only; version 1.8.15.0 only
• Asterisk Digiumphones: version 10.0.0 only; version 10.1.0 only; version 10.2.0 only; version 10.3.0 only; version 10.4.0 only; version 10.5.0 only; …
• Asterisk Open Source: 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; …

Published 2013-04-01. Last modified 2026-06-16.