CVE Catalog

CVE-2017-12244

High
Published: Translated: NVD NIST

Summary

A vulnerability in the detection engine parsing of IPv6 packets for Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause high CPU utilization or to cause a denial of service (DoS) condition because the Snort process restarts unexpectedly.

Risk Assessment

An attacker could exploit this vulnerability by sending a malicious IPv6 packet, potentially leading to traffic inspection being bypassed or dropped, jeopardizing service availability.

Recommendation

It is recommended to update Cisco Firepower System Software to the latest version and to monitor IPv6 traffic for potential attacks.

Related vulnerabilities

Original NVD description (English source)

A vulnerability in the detection engine parsing of IPv6 packets for Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause high CPU utilization or to cause a denial of service (DoS) condition because the Snort process restarts unexpectedly. The vulnerability is due to improper input validation of the fields in the IPv6 extension header packet. An attacker could exploit this vulnerability by sending a malicious IPv6 packet to the detection engine on the targeted device. An exploit could allow the attacker to cause a DoS condition if the Snort process restarts and traffic inspection is bypassed or traffic is dropped. This vulnerability is specific to IPv6 traffic only. This vulnerability affects Cisco Firepower System Software Releases 6.0 and later when the software has one or more file action policies configured and is running on any of the following Cisco products: 3000 Series Industrial Security Appliances (ISR), Adaptive Security Appliance (ASA) 550

Vulnerability data from NVD (NIST) · CISA KEV · EPSS