In March of last year, researchers reported to have discovered multiple attack cases that were coming from Germany, Singapore, and the Netherlands. It also reported that it had discovered cases where the vulnerability's remote code execution exploits were being actively traded. Recent weeks have seen the disclosure of real-world attacks that leveraged CVE-2024-23897 in the wild to compromise BORN Group and Brontoo Technology Solutions. The RansomExx ransomware gang has been identified as the perpetrators of the attacks.

An attacker can access any file on the Jenkins server thanks to the unauthenticated LFI vulnerability CVE-2024-23897. Due to inadequate input validation, this vulnerability allows attackers to alter particular parameters and deceive the server into opening and displaying private files. Due to the ongoing exploitation of the vulnerability, agencies under the Federal Civilian Executive Branch (FCEB) have until September 9, 2024, to implement the necessary remedies and safeguard their networks from ongoing attacks.

Impact

• Code Execution
• File Encryption
• Sensitive Data Theft
• Financial Loss

Indicators of Compromise

CVE

• CVE-2024-23897

Affected Vendors

Remediation

• Refer to Jenkins Security Advisory for patch, upgrade, or suggested workaround information.
• Organizations must test their assets for the vulnerability mentioned above and apply the available security patch or mitigation steps as soon as possible.
• Implement multi-factor authentication to add an extra layer of security to login processes.
• Regularly monitor network activity for any unusual behavior, as this may indicate that a cyberattack is underway.
• Organizations must stay vigilant and follow best practices for cybersecurity to protect their systems and data from potential threats. This includes regularly updating software and implementing strong access controls and monitoring tools.
• Develop a comprehensive incident response plan to respond effectively in case of a security breach or data leakage.
• Maintain regular backups of critical data and systems to ensure data recovery in case of a security incident.
• Adhere to security best practices, including the principle of least privilege, and ensure that users and applications have only the necessary permissions.
• Establish a robust patch management process to ensure that security patches are evaluated, tested, and applied promptly.
• Conduct security audits and assessments to evaluate the overall security posture of your systems and networks.
• Implement network segmentation to contain and isolate potential threats to limit their impact on critical systems.