CVE-2017-6630

A vulnerability in the Session Initiation Protocol (SIP) implementation of Cisco IP Phone 8851 11.0(0.1) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to an abnormal SIP message. An attacker could exploit this vulnerability by manipulating the CANCEL packet. An exploit could allow the attacker to cause a disruption of service to the phone. Cisco Bug IDs: CSCvc34795.

• CWE-399

• http://www.securityfocus.com/bid/98533Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1038511
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-sipVendor Advisory
• http://www.securityfocus.com/bid/98533Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1038511
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-sipVendor Advisory

Published

May 22, 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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