Vulnerability CVE-2008-5558
Published: 2008-12-17   Modified: 2012-02-12

Description:
Asterisk Open Source 1.2.26 through 1.2.30.3 and Business Edition B.2.3.5 through B.2.5.5, when realtime IAX2 users are enabled, allows remote attackers to cause a denial of service (crash) via authentication attempts involving (1) an unknown user or (2) a user using hostname matching.

See advisories in our WLB2 database:
Topic
Author
Date
Low
Remote crash vulnerability in IAX2
Jon Leren Scho/p...
19.12.2008

Type:

CWE-287

 (Improper Authentication)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Asterisk -> Asterisk business edition 
Asterisk -> Open source 

 References:
http://downloads.digium.com/pub/security/AST-2008-012.html
http://security.gentoo.org/glsa/glsa-200905-01.xml
http://securityreason.com/securityalert/4769
http://www.securityfocus.com/archive/1/499117/100/0/threaded
http://www.securityfocus.com/bid/32773
http://www.securitytracker.com/id?1021378
http://www.vupen.com/english/advisories/2008/3403
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