Detections
Analytics
CVE-2011-2666
medium
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.
References
https://exchange.xforce.ibmcloud.com/vulnerabilities/68472
http://downloads.asterisk.org/pub/security/AST-2011-011.html