#VU9509 Denial of service in Cisco 6800 Series IP Phones - CVE-2017-12328
Published: December 1, 2017
Vulnerability identifier: #VU9509
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-12328
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco 6800 Series IP Phones
Cisco 6800 Series IP Phones
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in Session Initiation Protocol (SIP) call handling due to incomplete input validation of the SIP packet header. A remote attacker can send a malformed SIP packet to a targeted phone, cause the SIP process unexpectedly to restart and all phone calls to drop.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists in Session Initiation Protocol (SIP) call handling due to incomplete input validation of the SIP packet header. A remote attacker can send a malformed SIP packet to a targeted phone, cause the SIP process unexpectedly to restart and all phone calls to drop.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.