CVE-2011-2666
EPSS 0.59%Published: 7/6/2011Modified: 4/28/2026
Also known as:DEBIAN-CVE-2011-2666
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.
Affected packages (1)
- Debian/asteriskfrom 0, < 1:1.8.3.3-1