Field Assessment
AI analysis pending.
CVE
CVE-2011-2666
Severity
MEDIUM
CVSS
5
EPSS
1.33%
Original Filing — NVD Description
The default configuration of the SIP channel driver in Asterisk Open Source 1.4.x through 1.4.41.2 and 1.6.2.x through 1.6.2.18.2 does not enable the alwaysauthreject option, which allows remote attackers to enumerate account names by making a series of invalid SIP requests and observing the differences in the responses for different usernames, a different vulnerability than CVE-2011-2536.