CVE-2024-20337: CRLF Injection
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.
Affected Software
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the severity of CVE-2024-20337?
CVE-2024-20337 has been classified with a severity rating that may allow remote attackers to exploit the vulnerability.
How do I fix CVE-2024-20337?
To mitigate CVE-2024-20337, users should apply the latest security patch provided by Cisco for the Secure Client.
Who is affected by CVE-2024-20337?
CVE-2024-20337 affects users of Cisco Secure Client specifically using the vulnerable SAML authentication process.
What type of attack can be executed through CVE-2024-20337?
CVE-2024-20337 can enable attackers to perform a carriage return line feed (CRLF) injection attack.
Can CVE-2024-20337 be exploited remotely?
Yes, CVE-2024-20337 can be exploited by unauthenticated remote attackers against targeted users.