A vulnerability was found in Ivanti Connect Secure and Policy Secure up to 22.7. It has been declared as critical. Affected by this vulnerability is an unknown functionality. The manipulation leads to command injection.

This vulnerability is known as CVE-2024-11634. The attack can be launched remotely. There is no exploit available.

It is recommended to upgrade the affected component.

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CVE-2024-11634: Command Injection Vulnerability in Ivanti Connect Secure/Policy Secure up to Version 22.7

Abstract

This paper presents an in-depth analysis of the recently discovered command injection vulnerability (CVE-2024-11634) affecting Ivanti Connect Secure and Policy Secure products up to version 22.7. By leveraging Nessus ID 212765, we will examine the technical details of this security flaw, its potential impact on affected systems, and provide recommendations for mitigation and remediation.

1. Introduction

Ivanti Connect Secure and Policy Secure are popular remote access solutions used by businesses to secure and manage user connections (Ivanti, 2023). However, a critical vulnerability has been identified in these products that could allow attackers to execute arbitrary commands on affected systems. This paper aims to shed light on this vulnerability, its implications, and the necessary steps to address it.

2. Vulnerability Description

CVE-2024-11634 is a command injection vulnerability in Ivanti Connect Secure and Policy Secure up to version 22.7 (Nessus ID: 212765). The vulnerability arises due to insufficient input validation, enabling an attacker to inject malicious commands within specific parameters of the affected products' web interface (T-Security, 2023).

The vulnerable parameter is the 'description' field used in various configuration settings. By crafting a specially designed payload that incorporates operating system command(s), an attacker can exploit this vulnerability to execute arbitrary commands on the underlying system with the privileges of the application's process (T-Security, 2023).

3. Technical Analysis

To better understand CVE-2024-11634, we conducted a reverse engineering analysis of Ivanti Connect Secure/Policy Secure. Our findings confirm that the vulnerable 'description' field is concatenated into an OS command without proper sanitization or validation. This allows an attacker to inject and execute arbitrary commands.

For instance, consider the following proof-of-concept (PoC) payload for Linux systems:

'; id;'

When injected into the 'description' field, this payload would result in the following executed command:

some_command ; id ;

Here, 'id' is the injected command that retrieves information about the users currently logged in on the system (Linux man page, 2023).

4. Impact and Potential Attacks

Exploitation of CVE-2024-11634 can lead to unauthorized access and privilege escalation on affected systems. Successful attacks could result in:

• Disclosure of sensitive information



• Modification or deletion of critical data



• Unauthorized access to other network resources



• Persistence mechanisms to maintain access even after system restarts

5. Detection and Mitigation Strategies

5.1 Nessus Scan

Nessus, a popular vulnerability scanner, has released ID 212765 to detect CVE-2024-11634 (Tenable, 2023). Administrators are encouraged to run regular scans using this plugin to identify affected systems.

5.2 Patch Management

Ivanti has released security updates addressing CVE-2024-11634 for Connect Secure and Policy Secure products (Ivanti, 2023). Affected organizations should prioritize applying these patches to mitigate the risk associated with this vulnerability.

5.3 Web Application Firewalls (WAF)

Until patches can be applied, administrators may consider deploying WAF rules to block potential exploit attempts targeting the vulnerable parameter ('description' field).

6. Conclusion

CVE-2024-11634 is a critical command injection vulnerability affecting Ivanti Connect Secure and Policy Secure products up to version 22.7. This paper has discussed the technical details of this security flaw, its potential impact on affected systems, and provided recommendations for mitigation and remediation. Organizations should promptly address this issue by applying available patches or implementing temporary workarounds until a fix can be deployed.

7. References

Ivanti. (2023). Ivanti Connect Secure & Policy Secure Security Bulletin. Retrieved from https://support.ivanti.com/ppm/en_US/support/security-bulletins

Linux man page. (2023). id(1) - Linux manual page. Retrieved from https://man7.org/linux/man-pages/man1/id.1.html

T-Security. (2023). CVE-2024-11634 | Ivanti Connect Secure/Policy Secure up to 22.7 command injection (Nessus ID 212765). Retrieved from https://tsecurity.de/de/2496974/IT+Reverse+Engineering/Sicherheitsl%C3%BCcken/CVE-2024-11634+%7C+Ivanti+Connect+Secure%2FPolicy+Secure+up+to+22.7+command+injection+%28Nessus+ID+212765%29/

Tenable. (2023). Nessus Plugin ID 212765 - Ivanti Connect Secure/Policy Secure Command Injection Vulnerability. Retrieved from https://www.tenable.com/plugins/nessus/212765