SID 1:64191

Rule Category

SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.

Alert Message

SERVER-WEBAPP Ivanti Connect Secure admin portal CRLF injection attempt

Rule Explanation

This rule looks for CRLF (\r\n) sequences present in multiple parameters in requests to the "/admincertnewcsr.cgi" endpoint on Ivanti Connect Secure web applications.

What To Look For

This rule fires on attempts to exploit a CRLF injection attempt against Ivanti Connect Secure web applications.

Known Usage

Public information/Proof of Concept available

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

MITRE::ATT&CK Framework::Enterprise::Initial Access::Exploit Public-Facing Application

Adversaries may attempt to take advantage of a weakness in an Internet-facing computer or program using software, data, or commands in order to cause unintended or unanticipated behavior. The weakness in the system can be a bug, a glitch, or a design vulnerability. These applications are often websites, but can include databases (like SQL), standard services (like SMB or SSH), network device administration and management protocols (like SNMP and Smart Install), and any other applications with Internet accessible open sockets, such as web servers and related services.

Rule Categories::Server::Web Applications

CVE

CVE-2024-37404

Additional Links

blog.amberwolf.com/blog/2024/october/cve-2024-37404-ivanti-connect-secure-authenticated-rce-via-openssl-crlf-injection/

Rule Vulnerability

N/A

Not Applicable

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.

CVE-2024-37404

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