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CVE-2024-2389 in Progress Flowmon Requires Immediate Patching

Navigating the severity of the CVE-2024-2389 vulnerability in Progress Flowmon, and the ramifications (and fix) for enterprise


A significant security vulnerability (CVE-2024-2389) has surfaced in Progress Flowmon, a tool revered for its robust performance tracking, diagnostics, and network detection and response capabilities. Used by over 1,500 global enterprises, including high-profile names like SEGA, KIA, TDK, Volkswagen, Orange, and Tietoevry, to name but a few, this vulnerability has far-reaching implications.

Unpacking the CVE-2024-2389 Vulnerability

Recently, researchers at Rhino Security Labs uncovered a critical flaw in Progress Flowmon, tracked as CVE-2024-2389, which has been rated with a severity score of 10/10. This flaw poses a significant risk as it allows attackers to gain unauthenticated remote access to the Flowmon web interface through a specially crafted API request, enabling them to execute arbitrary system commands.

Technical Breakdown of the Attack

The vulnerability specifically affects product versions v12.x and v11.x. The core of the exploit involves manipulating the ‘pluginPath’ or ‘file parameters’ within the system’s API requests. By leveraging command substitution syntax, such as $(…), attackers can inject malicious commands. Although the command executes without providing output visibility to the attacker, it allows for the writing of a webshell into the directory /var/www/shtml/, facilitating further malicious activities such as privilege escalation to root access.

Demonstrating the Exploit

Rhino Security Labs further elucidated the vulnerability by releasing a demonstration showing how an attacker could exploit this flaw to plant a webshell on the system and escalate privileges. This shows the immediate and dangerous nature of the vulnerability and shows the potential for significant system compromise.

Mitigation and Response

Upon discovery, Progress Software promptly issued an alert on April 4th, advising customers of the vulnerability and its potential impacts. The company has released updates—v12.3.4 and v11.1.14—to remediate the identified issues. For customers, updating their systems either through the ‘Automatic package download’ feature or manually from the vendor’s download center is critical. Progress Software recommends further upgrading all Flowmon modules to ensure comprehensive protection.

The Current Landscape

Despite the availability of patches, the risk landscape remains concerning. Two weeks following the initial alert, Italy’s CSIRT noted that exploits had already surfaced, with practical exploit code (PoC) being shared publicly on platforms like X by April 10. A survey of network assets using the Fofa search engine reveals about 500 Flowmon servers are currently exposed online, with other search engines like Shodan and Hunter showing fewer instances.

Our industry has seen an extraordinary rise in cybersecurity vulnerabilities this year, and zero-day threats and events like the recent ‘mother of all breaches’ have been front-page news and on the lips of the C-suite. These new findings further highlight the urgent need for affected systems to be secured against potential exploits.

Best Practices Moving Forward

For organizations utilizing Flowmon, the response should not only be reactive but also proactive. Beyond immediate updates, instituting rigorous security protocols and regular audits of network tools can help mitigate such vulnerabilities. Employing advanced network security measures, educating staff on potential threats, and maintaining an up-to-date system are essential steps in safeguarding against future security breaches.

Laying CVE-2024-2389 to Rest

The discovery of CVE-2024-2389 in Progress Flowmon is yet another reminder of the ever-present threats in network security and the continuous need for vigilance and prompt action in cybersecurity management. 2024 hacking techniques are becoming ever more sophisticated, and 2024 cybersecurity statistics already make for daily front-page news. The sophistication of potential threats continues to grow, as does the rise in cybersecurity vulnerabilities and zero day attacks, making it crucial for organizations to stay ahead in their security practices to protect their critical network infrastructures.



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