PT-2024-4160 · Cisco · Cisco Asa+1

Published 2024-05-22 · Updated 2026-04-21 · CVE-2024-20355

Positive Technologies (AI Summary)

CVSS v3.1

5.0

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Cisco Adaptive Security Appliance (ASA) Software (affected versions not specified) Cisco Firepower Threat Defense (FTD) Software (affected versions not specified)

Description A vulnerability in the implementation of SAML 2.0 single sign-on (SSO) for remote access VPN services could allow an authenticated, remote attacker to establish a VPN session on an affected device. This is due to improper separation of authorization domains when using SAML authentication. An attacker could exploit this by using valid credentials to authenticate, intercepting the SAML SSO token, and submitting it 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 they are not authorized to use and connect to secured networks behind the affected device.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

BDU:2024-04644

CVE-2024-20355

Affected Products

Cisco Asa

Cisco Ftd

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2024-20355 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-saml-bypass-KkNvXyKW · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-20355 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-04644 · Security Note
• https://twitter.com/VulmonFeeds/status/1793351023911747752 · Twitter Post
• https://twitter.com/dailycve/status/2046379626679632291 · Twitter Post
• https://twitter.com/CVEnew/status/1793384161324962198 · Twitter Post
• https://twitter.com/linuxpatch/status/1793343041941491953 · Twitter Post
• https://vuldb.com/?id.265952 · Note