Vulnerability Details : CVE-2017-6656
A vulnerability in Session Initiation Protocol (SIP) call handling of Cisco IP Phone 8800 Series devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the SIP process unexpectedly restarting. All active phone calls are dropped as the SIP process restarts. More Information: CSCvc29353. Known Affected Releases: 11.0(0.1). Known Fixed Releases: 11.0(0)MP2.153 11.0(0)MP2.62.
Vulnerability category: Input validationDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2017-6656
Probability of exploitation activity in the next 30 days: 0.36%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 68 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-6656
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2017-6656
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The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-6656
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http://www.securityfocus.com/bid/98996
Cisco IP Phone 8800 Series CVE-2017-6656 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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http://www.securitytracker.com/id/1038636
Cisco 8800 Series IP Phones SIP Packet Validation Flaw Lets Remote Users Cause the Target SIP Service to Restart - SecurityTracker
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https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-sip
Cisco IP Phone 8800 Series SIP Denial of Service VulnerabilityVendor Advisory
Products affected by CVE-2017-6656
- cpe:2.3:a:cisco:ip_phone_8800_series:11.0\(0.1\):*:*:*:*:*:*:*