CVE-2011-2666

MediumCVSS 5.0/10Last modified Jun 16, 2026

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.

Metrics

CVSS 2.0 5.0/10AV:N/AC:L/Au:N/C:P/I:N/A:N

Weakness enumeration

CWE-16

Affected software

No affected versions have been published.

Timeline

Published: Jul 6, 2011
Last modified: Jun 16, 2026
NVD status: Modified

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