Denial of service in Small Business SPA51x - CVE-2017-12259
Published: October 19, 2017
Vulnerability identifier: #VU8891
CSH Severity: Low
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-12259
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition.
The weakness exists in the implementation of Session Initiation Protocol (SIP) functionality in Cisco Small Business SPA51x Series IP Phones due to improper handling of SIP request messages. A remote attacker can send malformed SIP messages and the device to become unresponsive.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists in the implementation of Session Initiation Protocol (SIP) functionality in Cisco Small Business SPA51x Series IP Phones due to improper handling of SIP request messages. A remote attacker can send malformed SIP messages and the device to become unresponsive.
Successful exploitation of the vulnerability results in denial of service.
Affected software
Small Business SPA51x
How to mitigate CVE-2017-12259
Update to version 7.6(2)SR2.