SB2017060805 - Denial of service in Cisco IP Phone 8800 Series
Published: June 8, 2017
Security Bulletin ID
SB2017060805
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Denial of service (CVE-ID: CVE-2017-6656)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the Session Initiation Protocol (SIP) due to incomplete input validation of the SIP packet header. A remote attacker can send a specially crafted malformed SIP packet to the target phone, cause the SIP process to restart and all active phone calls to drop.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.