CVE-2024-7591 Scanner

The LoadMaster Load Balancer, developed by Kemp Technologies, is utilized worldwide by businesses to manage and optimize data traffic. It ensures high availability, scalability, and security for websites and applications. LoadMaster is particularly used in environments requiring load distribution, such as data centers and cloud platforms. Its users range from small businesses to large enterprises needing robust load balancing solutions. Through optimizing web traffic, LoadMaster is critical in maintaining user accessibility and service reliability. Especially pertinent in areas demanding reliable application delivery, LoadMaster plays a central role in IT infrastructure operations.

The vulnerability, identified as OS Command Injection, occurs when externally-influenced input is improperly validated, allowing execution of arbitrary commands on the server. LoadMaster's handling of user inputs in certain configurations fails to adequately filter unsafe characters or commands. This weak point permits attackers to leverage crafted requests to execute shell commands on the server. As the commands run with system-level privileges, the risk to server integrity and sensitive data is elevated. Effective exploitation may lead to full system control, data breaches, and interference with the balance's intended functionality.

Technical analysis reveals that vulnerable endpoints include the processes involved in login procedures where user tokens are managed. The template illustrates attackers could inject commands via POST requests manipulating the 'token' and 'token2' parameters. Custom payloads designed to exploit input validation flaws have been shown successful. By providing certain shell parameters, attackers can trigger unauthorized command execution. The intercept request mechanism also highlights the risk, given that command outputs result in verifiable changes, like DNS queries, confirming the vulnerability's exploitability.

Exploitation of this vulnerability enables attackers to jeopardize the LoadMaster system, possibly resulting in unauthorized access and control over the server. Given administrative rights acquired through successful attacks, malicious entities could disrupt load balancing, extract sensitive data, or manipulate connected systems. The high CVSS score reflects the severe potential impacts, including full data compromise, denied service, and unrestricted access to critical network areas. Businesses relying on LoadMaster for secure traffic management could experience severe operational interruptions and data integrity challenges.

REFERENCES

• https://insinuator.net/2024/11/vulnerability-disclosure-command-injection-in-kemp-loadmaster-load-balancer-cve-2024-7591/
• https://nvd.nist.gov/vuln/detail/cve-2024-7591
• https://support.kemptechnologies.com/hc/en-us/articles/29196371689613-LoadMaster-Security-Vulnerability-CVE-2024-7591
• https://insinuator.net/2024/11/vulnerability-disclosure-command-injection-in-kemp-loadmaster-load-balancer-cve-2024-7591