A vulnerability in ICMPv6 inspection when configured with the Snort 2 detection engine for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the CPU of an affected device to spike to 100 percent, which could stop all traffic processing and result in a denial of service (DoS) condition. FTD management traffic is not affected by this vulnerability. This vulnerability is due to improper error checking when parsing fields within the ICMPv6 header. An attacker could exploit this vulnerability by sending a crafted ICMPv6 packet through an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition. Note: To recover from the DoS condition, the Snort 2 Detection Engine or the Cisco FTD device may need to be restarted.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2023-11-01T17:16:49.598Z

Updated: 2024-08-02T08:57:35.550Z

Reserved: 2022-10-27T18:47:50.334Z

Link: CVE-2023-20083

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-11-01T18:15:09.143

Modified: 2024-11-21T07:40:31.057

Link: CVE-2023-20083

cve-icon Redhat

No data.