CVE-2024-20337
A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attacker to conduct a carriage return line feed (CRLF) injection attack against a user.
Description
A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attacker to conduct a carriage return line feed (CRLF) injection attack against a user. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link while establishing a VPN session. A successful exploit could allow the attacker to execute arbitrary script code in the browser or access sensitive, browser-based information, including a valid SAML token. The attacker could then use the token to establish a remote access VPN session with the privileges of the affected user. Individual hosts and services behind the VPN headend would still need additional credentials for successful access.
Weakness: CWE-93
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Secure Client (AnyConnect) | VPN & Remote Access | cna-assigner |
Vendor-reported products (2)
- Cisco · Cisco Secure Client
- cisco · secure_client
Vendor advisory
cisco-sa-secure-client-crlf-W43V4G7
Cisco Secure Client Carriage Return Line Feed Injection Vulnerability
Cisco’s rating: High (advisory CVSS 8.2) · Published Mar 6, 2024 · updated Mar 12, 2024 (revision 1.1)
Bug ID: CSCwi37512
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from