CVE Catalog

CVE-2005-4570

High
Published: Translated: NVD NIST

Summary

IKEv1 implementations in FortiOS, FortiClient, and FortiManager allow remote attackers to cause a denial of service by sending IKE packets with invalid IPSec attribute values. The attack terminates a process that is automatically restarted.

Risk Assessment

The risk involves potential disruption of IKEv1-based VPN services, leading to network unavailability for users and communication interruptions.

Recommendation

It is recommended to update Fortinet software to a patched version or apply temporary mitigations such as filtering IKE packets at the network firewall.

Related vulnerabilities

Original NVD description (English source)

The Internet Key Exchange version 1 (IKEv1) implementations in Fortinet FortiOS 2.50, 2.80 and 3.0, FortiClient 2.0,; and FortiManager 2.80 and 3.0 allow remote attackers to cause a denial of service (termination of a process that is automatically restarted) via IKE packets with invalid values of certain IPSec attributes, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1. NOTE: due to the lack of details in the vendor advisory, it is unclear which of CVE-2005-3666, CVE-2005-3667, and/or CVE-2005-3668 this issue applies to.

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