Vulnerability CVE-2017-12328


Published: 2017-11-30

Description:
A vulnerability in Session Initiation Protocol (SIP) call handling in Cisco IP Phone 8800 Series devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition because the SIP process unexpectedly restarts. All active phone calls are dropped as the SIP process restarts. The vulnerability is due to incomplete input validation of the SIP packet header. An attacker could exploit this vulnerability by sending a malformed SIP packet to a targeted phone. An exploit could allow the attacker to cause a DoS condition because all phone calls are dropped when the SIP process unexpectedly restarts. Cisco Bug IDs: CSCvc62590.

Type:

CWE-20

(Improper Input Validation)

Vendor: Cisco
Product: Ip phone 8800 series firmware 
Version: 11.0(0.1);

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

 References:
http://www.securityfocus.com/bid/102003
http://www.securitytracker.com/id/1039922
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-ipp

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