Vulnerability CVE-2007-4455
Published: 2007-08-21   Modified: 2012-02-12

Description:
The SIP channel driver (chan_sip) in Asterisk Open Source 1.4.x before 1.4.11, AsteriskNOW before beta7, Asterisk Appliance Developer Kit 0.x before 0.8.0, and s800i (Asterisk Appliance) 1.x before 1.0.3 allows remote attackers to cause a denial of service (memory exhaustion) via a SIP dialog that causes a large number of history entries to be created.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Resource Exhaustion Vulnerability in Asterisk SIP channel driver
Asterisk Securit...
23.08.2007

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Asterisk -> Asterisk 
Asterisk -> Asterisk appliance developer kit 
Asterisk -> Asterisknow 

 References:
http://www.vupen.com/english/advisories/2007/2953
http://seclists.org/fulldisclosure/2007/Aug/0393.html
http://downloads.digium.com/pub/asa/AST-2007-020.html
http://xforce.iss.net/xforce/xfdb/36145
http://www.securitytracker.com/id?1018595
http://www.securityfocus.com/bid/25392
http://securityreason.com/securityalert/3047
http://secunia.com/advisories/26553
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