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.

• CWE-20

• http://www.securityfocus.com/bid/98996Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1038636
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-sipVendor Advisory
• http://www.securityfocus.com/bid/98996Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1038636
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-sipVendor Advisory

Published

Jun 13, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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