A vulnerability in the implementation of SAML 2.0 single sign-on (SSO) for remote access VPN services in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to successfully establish a VPN session on an affected device. This vulnerability is due to improper separation of authorization domains when using SAML authentication. An attacker could exploit this vulnerability by using valid credentials to successfully authenticate using their designated connection profile (tunnel group), intercepting the SAML SSO token that is sent back from the Cisco ASA device, and then submitting the same SAML SSO token to a different tunnel group for authentication. A successful exploit could allow the attacker to establish a remote access VPN session using a connection profile that they are not authorized to use and connect to secured networks behind the affected device that they are not authorized to access. For successful exploitation, the attacker must have valid remote access VPN user credentials.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2024-05-22T16:54:35.619Z

Updated: 2024-08-01T21:59:42.284Z

Reserved: 2023-11-08T15:08:07.648Z

Link: CVE-2024-20355

cve-icon Vulnrichment

Updated: 2024-08-01T21:59:42.284Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-05-22T17:16:13.477

Modified: 2024-05-22T18:59:20.240

Link: CVE-2024-20355

cve-icon Redhat

No data.