Title: Asterisk SIP Response Username Enumeration Remote Information Disclosure Vulnerability
Severity: MODERATE
Description:
Asterisk is an open-source PBX application available for multiple operating platforms.
Asterisk is prone to an information-disclosure vulnerability because it doesn't provide safe responses to failed SIP authentication attempts. Specifically, when two specially crafted REGISTER messages are sent, different responses are provided, depending on whether a user exists or not.
Attackers can exploit this issue to discover whether specific usernames exist. Information harvested may aid in launching further attacks.
Affected Products:
- Asterisk Asterisk
- Asterisk Asterisk 0.1.11
- Asterisk Asterisk 0.1.7
- Asterisk Asterisk 0.1.8
- Asterisk Asterisk 0.1.9
- Asterisk Asterisk 0.1.9 -1
- Asterisk Asterisk 0.2.0
- Asterisk Asterisk 0.3.0
- Asterisk Asterisk 0.4.0
- Asterisk Asterisk 0.4.1
- Asterisk Asterisk 0.7.0 .0
- Asterisk Asterisk 0.7.1
- Asterisk Asterisk 0.7.2
- Asterisk Asterisk 0.9.0 .0
- Asterisk Asterisk 1.0.0
- Asterisk Asterisk 1.0.10
- Asterisk Asterisk 1.0.11
- Asterisk Asterisk 1.0.12
- Asterisk Asterisk 1.0.3.4
- Asterisk Asterisk 1.0.6
- Asterisk Asterisk 1.0.7
- Asterisk Asterisk 1.0.8
- Asterisk Asterisk 1.0.9
- Asterisk Asterisk 1.2.0 .0-beta1
- Asterisk Asterisk 1.2.0 .0-beta2
- Asterisk Asterisk 1.2.10
- Asterisk Asterisk 1.2.11
- Asterisk Asterisk 1.2.11
- Asterisk Asterisk 1.2.13
- Asterisk Asterisk 1.2.14
- Asterisk Asterisk 1.2.15
- Asterisk Asterisk 1.2.16
- Asterisk Asterisk 1.2.17
- Asterisk Asterisk 1.2.18
- Asterisk Asterisk 1.2.19
- Asterisk Asterisk 1.2.21
- Asterisk Asterisk 1.2.22
- Asterisk Asterisk 1.2.23
- Asterisk Asterisk 1.2.24
- Asterisk Asterisk 1.2.25
- Asterisk Asterisk 1.2.26
- Asterisk Asterisk 1.2.27
- Asterisk Asterisk 1.2.27
- Asterisk Asterisk 1.2.28
- Asterisk Asterisk 1.2.29
- Asterisk Asterisk 1.2.30
- Asterisk Asterisk 1.2.30.3
- Asterisk Asterisk 1.2.30.4
- Asterisk Asterisk 1.2.31
- Asterisk Asterisk 1.2.32
- Asterisk Asterisk 1.2.33
- Asterisk Asterisk 1.2.34
- Asterisk Asterisk 1.2.5
- Asterisk Asterisk 1.2.6
- Asterisk Asterisk 1.2.7
- Asterisk Asterisk 1.2.8
- Asterisk Asterisk 1.2.9
- Asterisk Asterisk 1.3.34
- Asterisk Asterisk 1.4 Beta
- Asterisk Asterisk 1.4 revision 95946
- Asterisk Asterisk 1.4.1
- Asterisk Asterisk 1.4.10
- Asterisk Asterisk 1.4.11
- Asterisk Asterisk 1.4.12
- Asterisk Asterisk 1.4.13
- Asterisk Asterisk 1.4.14
- Asterisk Asterisk 1.4.15
- Asterisk Asterisk 1.4.16
- Asterisk Asterisk 1.4.17
- Asterisk Asterisk 1.4.18
- Asterisk Asterisk 1.4.18.1
- Asterisk Asterisk 1.4.19
- Asterisk Asterisk 1.4.19-rc3
- Asterisk Asterisk 1.4.19.1
- Asterisk Asterisk 1.4.2
- Asterisk Asterisk 1.4.21.2
- Asterisk Asterisk 1.4.21.2
- Asterisk Asterisk 1.4.22
- Asterisk Asterisk 1.4.22.1
- Asterisk Asterisk 1.4.23
- Asterisk Asterisk 1.4.23 .2
- Asterisk Asterisk 1.4.23.1
- Asterisk Asterisk 1.4.24
- Asterisk Asterisk 1.4.24.1
- Asterisk Asterisk 1.4.26
- Asterisk Asterisk 1.4.26.1
- Asterisk Asterisk 1.4.26.2
- Asterisk Asterisk 1.4.3
- Asterisk Asterisk 1.4.4
- Asterisk Asterisk 1.4.5
- Asterisk Asterisk 1.4.6
- Asterisk Asterisk 1.4.7
- Asterisk Asterisk 1.4.8
- Asterisk Asterisk 1.4.9
- Asterisk Asterisk 1.6
- Asterisk Asterisk 1.6.0 6
- Asterisk Asterisk 1.6.0-beta6
- Asterisk Asterisk 1.6.0.14
- Asterisk Asterisk 1.6.0.15
- Asterisk Asterisk 1.6.0.3
- Asterisk Asterisk 1.6.0.8
- Asterisk Asterisk 1.6.1
- Asterisk Asterisk 1.6.1 0-rc1
- Asterisk Asterisk 1.6.1 0-rc2
- Asterisk Asterisk 1.6.1.5
- Asterisk Asterisk 1.6.1.6
- Asterisk Asterisk 1.6.1.7
- Asterisk Asterisk 1.6.1.8
- Asterisk Asterisk Business Edition A
- Asterisk Asterisk Business Edition B
- Asterisk Asterisk Business Edition B.1.3.2
- Asterisk Asterisk Business Edition B.1.3.3
- Asterisk Asterisk Business Edition B.2.2.0
- Asterisk Asterisk Business Edition B.2.2.0
- Asterisk Asterisk Business Edition B.2.2.1
- Asterisk Asterisk Business Edition B.2.2.1
- Asterisk Asterisk Business Edition B.2.3.1
- Asterisk Asterisk Business Edition B.2.3.2
- Asterisk Asterisk Business Edition B.2.3.3
- Asterisk Asterisk Business Edition B.2.3.4
- Asterisk Asterisk Business Edition B.2.3.5
- Asterisk Asterisk Business Edition B.2.3.6
- Asterisk Asterisk Business Edition B.2.5.1
- Asterisk Asterisk Business Edition B.2.5.10
- Asterisk Asterisk Business Edition B.2.5.2
- Asterisk Asterisk Business Edition B.2.5.3
- Asterisk Asterisk Business Edition B.2.5.4
- Asterisk Asterisk Business Edition B.2.5.5
- Asterisk Asterisk Business Edition B.2.5.6
- Asterisk Asterisk Business Edition B.2.5.7
- Asterisk Asterisk Business Edition B.2.5.8
- Asterisk Asterisk Business Edition B.2.5.9
- Asterisk Asterisk Business Edition C
- Asterisk Asterisk Business Edition C.1.0-beta7
- Asterisk Asterisk Business Edition C.1.0-beta8
- Asterisk Asterisk Business Edition C.1.10.3
- Asterisk Asterisk Business Edition C.1.10.4
- Asterisk Asterisk Business Edition C.1.10.5
- Asterisk Asterisk Business Edition C.1.6
- Asterisk Asterisk Business Edition C.1.6.1
- Asterisk Asterisk Business Edition C.1.6.2
- Asterisk Asterisk Business Edition C.1.8.1
- Asterisk Asterisk Business Edition C.2.1.2.1
- Asterisk Asterisk Business Edition C.2.3
- Asterisk Asterisk Business Edition C.2.3 .2
- Asterisk Asterisk Business Edition C.2.3.3
- Asterisk Asterisk Business Edition C.2.4.2
- Asterisk Asterisk Business Edition C.2.4.3
- Asterisk Asterisk Business Edition C.3.1 1
- Asterisk Asterisk Business Edition C.3.1.0
- Asterisk AsteriskNow 1.0
- Asterisk AsteriskNow 1.0.2
- Asterisk AsteriskNow 1.0.3
- Asterisk AsteriskNow Beta 5
- Asterisk AsteriskNow Beta 6
- Asterisk AsteriskNow Beta 7
- Asterisk AsteriskNow pre-release
- Asterisk AsteriskNow pre-release
- Asterisk s800i Appliance 1.0.0
- Asterisk s800i Appliance 1.0.1
- Asterisk s800i Appliance 1.0.2
- Asterisk s800i Appliance 1.0.3
- Asterisk s800i Appliance 1.1.0.0
- Asterisk s800i Appliance 1.1.0.2
- Asterisk s800i Appliance 1.1.0.3
- Asterisk s800i Appliance 1.2.0.1
- Asterisk s800i Appliance 1.3.0
- Asterisk s800i Appliance 1.3.0.2
- Asterisk s800i Appliance 1.3.0.3
- Gentoo Linux
References:
- Asterisk: AST-2009-008 SIP responses expose valid usernames
- Asterisk: Asterisk Homepage
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