Description
A vulnerability in the implementation of Security Assertion Markup Language (SAML) 2.0 single sign-on (SSO) for remote access VPN in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to intercept the SAML assertion of a user who is authenticating to a remote access VPN session. This vulnerability is due to insufficient validation of the login URL. An attacker could exploit this vulnerability by persuading a user to access a site that is under the control of the attacker, allowing the attacker to modify the login URL. A successful exploit could allow the attacker to intercept a successful SAML assertion and use that assertion to establish a remote access VPN session toward the affected device with the identity and permissions of the hijacked user, resulting in access to the protected network.
Analysis
No analysis available yet.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||||||||||||||
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| Cisco | Cisco Adaptive Security Appliance (ASA) Software | affected |
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| Cisco | Cisco Firepower Threat Defense Software | affected |
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Configuration 1 [-]
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Configuration 2 [-]
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No data.
No data available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
 EUVD |
EUVD-2023-24443 | A vulnerability in the implementation of Security Assertion Markup Language (SAML) 2.0 single sign-on (SSO) for remote access VPN in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to intercept the SAML assertion of a user who is authenticating to a remote access VPN session. This vulnerability is due to insufficient validation of the login URL. An attacker could exploit this vulnerability by persuading a user to access a site that is under the control of the attacker, allowing the attacker to modify the login URL. A successful exploit could allow the attacker to intercept a successful SAML assertion and use that assertion to establish a remote access VPN session toward the affected device with the identity and permissions of the hijacked user, resulting in access to the protected network. |
References
History
Tue, 11 Aug 2026 20:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cisco secure Firewall Threat Defense
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| CPEs | cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.4:*:*:*:*:*:*:* | |
| Vendors & Products |
Cisco firepower Threat Defense
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Cisco secure Firewall Threat Defense
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MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2024-08-02T09:05:36.229Z
Reserved: 2022-10-27T18:47:50.373Z
Link: CVE-2023-20264
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-11-01T18:15:09.757
Modified: 2026-08-11T19:33:44.513
Link: CVE-2023-20264
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses
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CWE-601
URL Redirection to Untrusted Site ('Open Redirect')
- NVD-CWE-noinfo