Improper input validation in Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC) - CVE-2017-12244
Published: October 5, 2017
Vulnerability identifier: #VU8699
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2017-12244
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC)
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC)
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to improper input validation of the fields in the IPv6 extension header packet in the detection engine. A remote attacker can send a specially crafted IPv6 packet to the detection engine, trigger high CPU utilization and cause the Snort process to restart.
Successful exploitation of the vulnerability results in denial of service.
How to mitigate CVE-2017-12244
The vulnerability is addressed in the following versions: 6.2.0.2 or 6.1.0.3.