Vulnerability CVE-2002-1935
Published: 2002-12-31   Modified: 2012-02-12

Description:
Pingtel Xpressa 1.2.5 through 2.0.1 uses predictable (1) Call-ID, (2) CSeq, and (3) "To" and "From" SIP URL values in a Session Identification Protocol (SIP) request, which allows remote attackers to avoid registering with the SIP registrar.

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

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
Partial
None
Affected software
Pingtel -> Xpressa 

 References:
http://www.sys-security.com/archive/advisories/More_Vulnerabilities_with_Pingtel_xpressa_SIP-based_IP_phones.txt
http://www.securityfocus.com/bid/5537
http://www.iss.net/security_center/static/9949.php
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