CVE-2011-2666

NameCVE-2011-2666
DescriptionThe 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.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)
NVD severitymedium (attack range: remote)
Debian/oldstablepackage asterisk is vulnerable.
Debian/stablenot vulnerable.
Debian/testingnot vulnerable.
Debian/unstablenot vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
asterisk (PTS)squeeze (security), squeeze1:1.6.2.9-2+squeeze12vulnerable
wheezy, wheezy (security)1:1.8.13.1~dfsg1-3+deb7u3fixed
jessie1:11.13.1~dfsg-2fixed
sid1:13.1.0~dfsg-1fixed

The information above is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
asterisksource(unstable)1:1.8.3.3-1medium

Notes

[squeeze] - asterisk <no-dsa> (minor issue; can be addressed through configuration)

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