CVE-2024-25641 is a critical vulnerability affecting Cacti, an operational monitoring and fault management framework. This vulnerability allows authenticated users with the 'Import Templates' permission to execute arbitrary PHP code on the web server. The issue is present in versions prior to 1.2.27 and is characterized as an arbitrary file write vulnerability, which can be exploited through the 'Package Import' feature.
The vulnerability resides in the `import_package()` function located in the `/lib/import.php` script. It blindly trusts the filename and file content provided within the XML data, which can lead to the writing or overwriting of arbitrary files on the web server. This lack of validation enables attackers to execute arbitrary PHP code, posing significant security risks.
Given the critical CVSS score of 9.1, organizations using Cacti are urged to prioritize patching immediately. The patch for this vulnerability is included in version 1.2.27, and it is essential for organizations to ensure they are running this version or later to mitigate the associated risks.
The vulnerability's exploitability is rated as critical, and there are known public exploits available. Organizations must take immediate action to protect their systems from potential exploitation.
Vulnerability Details
This vulnerability allows authenticated users to leverage the 'Package Import' feature to execute arbitrary PHP code on the web server. The problem originates from the `import_package()` function in the `/lib/import.php` script, which does not adequately validate the filename and file content in the XML data.
With a CVSS score of 9.1, this vulnerability is classified as critical. The affected products include Cacti and Fedora, specifically all versions prior to 1.2.27. The vulnerability was published on May 14, 2024, and is classified under CWE-20.
Technical Analysis
The root cause of CVE-2024-25641 is the lack of proper validation for file paths and content in the `import_package()` function. Attackers can exploit this vulnerability by supplying manipulated XML data that includes path traversal sequences, allowing them to write files outside the intended directory.
The attack vector is network-based, meaning attackers do not need physical access to the system to exploit the vulnerability. The complexity of the attack is low, as it requires only that the attacker has authenticated access to the system with the appropriate permissions.
The privileges required for exploitation are high, as the attacker must be an authenticated user with 'Import Templates' permission. User interaction is not required for successful exploitation. The impacts of this vulnerability include high confidentiality, integrity, and availability risks, as attackers may execute arbitrary PHP code, potentially leading to full system compromise.
Risk & Impact Analysis
Risk to organizations includes the potential for unauthorized access to sensitive data, unauthorized execution of code, and disruption of services. The vulnerability's exploitability and the availability of public exploits heighten the risk for organizations operating vulnerable versions of Cacti.
Organizations must assess the potential blast radius of this vulnerability, considering the critical nature of systems that rely on Cacti for operational monitoring. Given the high CVSS score and the critical exploitability status, organizations should prioritize patching immediately.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch 1.2.27 are affected by this vulnerability. Organizations should ensure they upgrade to this version to mitigate the risks associated with CVE-2024-25641.
Mitigation & Remediation
Organizations should prioritize patching by upgrading to Cacti version 1.2.27 or later. If immediate patching is not feasible, temporary workarounds include disabling the 'Package Import' feature to prevent exploitation.
Additionally, organizations should implement network controls to restrict unauthorized access to the Cacti interface and monitor logs for unusual activity that may indicate attempted exploitation.
For further security verification, conducting a penetration testing engagement can help identify any remaining vulnerabilities.
Detection Guidance
Organizations should monitor logs for indicators of exploitation, such as unusual file write operations or unauthorized access attempts to the 'Package Import' feature. Behavioral anomalies in user activity, especially from authenticated users, should also be investigated.
Network signatures for detecting access to the vulnerable `import_package()` endpoint can be established to alert on potential exploitation attempts.
AppSecure Threat Intelligence Insight
The critical nature of CVE-2024-25641 underscores the importance of secure coding practices and proper input validation in web applications. This vulnerability highlights a common risk associated with features that accept user-provided data without sufficient validation.
Security teams should take this incident as a lesson in the significance of rigorous testing and code reviews, especially for features that could be exploited by authenticated users.
As attackers increasingly target vulnerabilities in widely-used applications, organizations must remain vigilant and adopt a proactive security posture. For further insights on improving security practices, organizations can explore our resources on penetration testing methodology and vulnerability management programs to ensure comprehensive security coverage.
Lastly, adopting continuous monitoring and regular security assessments can significantly enhance an organization's ability to detect and respond to vulnerabilities in a timely manner.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)