Vulnerability CVE-2007-1693
Published: 2007-05-17   Modified: 2012-02-12

Description:
The SIP channel module in Yet Another Telephony Engine (Yate) before 1.2.0 sets the caller_info_uri parameter using an incorrect variable that can be NULL, which allows remote attackers to cause a denial of service (NULL dereference and application crash) via a Call-Info header without a purpose parameter.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Yate 1.1.0 Denial of Service Vulnerability
Yuri Gushin
20.05.2007

Type:

CWE-20

 (Improper Input Validation)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.8/10
6.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Yet another telephony engine -> Yet another telephony engine 
YATE -> Yet another telephony engine 

 References:
http://securityreason.com/securityalert/2716
http://voip.null.ro/cgi-bin/cvsweb.cgi/yate/modules/ysipchan.cpp
http://www.securityfocus.com/archive/1/467289/100/200/threaded
http://www.securityfocus.com/bid/23746
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