Vulnerability CVE-2015-1558
Published: 2015-02-09

Description:
Asterisk Open Source 12.x before 12.8.1 and 13.x before 13.1.1, when using the PJSIP channel driver, does not properly reclaim RTP ports, which allows remote authenticated users to cause a denial of service (file descriptor consumption) via an SDP offer containing only incompatible codecs.

Type:

CWE-399

 (Resource Management Errors)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.5/10
2.9/10
6.8/10
Exploit range
Attack complexity
Authentication
Remote
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Digium -> Asterisk 

 References:
http://downloads.asterisk.org/pub/security/AST-2015-001.html
http://seclists.org/fulldisclosure/2015/Jan/116
http://www.securityfocus.com/archive/1/534573/100/0/threaded
http://www.securitytracker.com/id/1031661
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