Improper input validation in Cisco IOS - CVE-2017-12231
Published: October 4, 2017 / Updated: March 8, 2022
Vulnerability identifier: #VU8686
CSH Severity: Low
CVSS v4: 6.9 [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]
CVE-ID: CVE-2017-12231
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition.
The weakness exists in the implementation of Network Address Translation (NAT) functionality in Cisco IOS Software due to the improper translation of H.323 messages that use the Registration, Admission, and Status (RAS) protocol.A remote attacker can send a specially crafted H.323 RAS packet and cause the device to reload or crash.
The weakness exists in the implementation of Network Address Translation (NAT) functionality in Cisco IOS Software due to the improper translation of H.323 messages that use the Registration, Admission, and Status (RAS) protocol.A remote attacker can send a specially crafted H.323 RAS packet and cause the device to reload or crash.
Affected software
Cisco IOS
How to mitigate CVE-2017-12231
Install update from vendor's website.