CVE-2024-20481

Basic Information

CVE State

PUBLISHED

Reserved Date

November 08, 2023

Published Date

October 23, 2024

Last Updated

October 24, 2024

Vendor

Cisco

Product

Cisco Adaptive Security Appliance (ASA) Software, Cisco Firepower Threat Defense Software

Description

A vulnerability in the Remote Access VPN (RAVPN) service of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) of the RAVPN service. This vulnerability is due to resource exhaustion. An attacker could exploit this vulnerability by sending a large number of VPN authentication requests to an affected device. A successful exploit could allow the attacker to exhaust resources, resulting in a DoS of the RAVPN service on the affected device. Depending on the impact of the attack, a reload of the device may be required to restore the RAVPN service. Services that are not related to VPN are not affected. Cisco Talos discussed these attacks in the blog post Large-scale brute-force activity targeting VPNs, SSH services with commonly used login credentials.

Tags

cisa edge

CVSS Scores

SSVC Information

Exploitation

active

Automatable

Yes

Technical Impact

partial

Exploit Status

Exploited in the Wild

Yes (2024-10-24 00:00:00 UTC) Source