|Description||Asterisk Open Source 1.2.x before 1.2.26 and 1.4.x before 1.4.16, and Business Edition B.x.x before B.2.3.6 and C.x.x before C.1.0-beta8, when using database-based registrations ("realtime") and host-based authentication, does not check the IP address when the username is correct and there is no password, which allows remote attackers to bypass authentication using a valid username.|
|Source||CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)|
|NVD severity||medium (attack range: remote)|
Vulnerable and fixed packages
The table below lists information on source packages.
|asterisk (PTS)||jessie (security), jessie||1:11.13.1~dfsg-2+deb8u5||fixed|
|stretch (security), stretch||1:13.14.1~dfsg-2+deb9u3||fixed|
The information below is based on the following data on fixed versions.
[etch] - asterisk <no-dsa> (Minor issue, eventually fix in a later DSA)
[sarge] - asterisk <not-affected> (Vulnerable code not present)