4.3CVSSMEDIUM
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.
CVSS Vector Breakdown
Exploitability
AV:NAccess VectorNetwork
AC:MAccess ComplexityMedium
Au:NAuthenticationNone
Impact
C:PConfidentialityPartial
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Attack Graph
Products CVE Techniques Tactics
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Exploitability
Official Patch Available
MITRE ATT&CK
2 techniques Initial Access
References
http://secunia.com/advisories/28149
secunia.com
http://secunia.com/advisories/29782
secunia.com
http://security.gentoo.org/glsa/glsa-200804-13.xml
security.gentoo.org
and 12 more references View all →
Timeline
Published
Dec 20, 2007
Last Updated
Apr 23, 2026
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