CVE-2023-6846 is a high-severity vulnerability identified in the File Manager Pro plugin for WordPress. This vulnerability allows authenticated attackers with subscriber access and above to perform arbitrary file uploads via the mk_check_filemanager_php_syntax AJAX function. With a CVSS score of 8.8, the risk associated with this vulnerability is significant, as it can lead to remote code execution on the server.
This vulnerability impacts all versions of the plugin up to, and including, version 8.3.4. It is crucial for organizations utilizing this plugin to understand the potential risks, as unauthorized code execution can lead to data breaches, system compromise, and other malicious activities. Version 8.3.5 has addressed this issue by implementing a capability check that restricts execution to users with admin privileges.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability. Failure to do so could expose systems to unauthorized access and exploitation, thereby compromising the integrity and confidentiality of sensitive data.
Given the active exploitation potential of this vulnerability, security teams need to assess their environments swiftly and implement necessary updates. Continuous monitoring and vulnerability management practices are vital to ensuring the security of WordPress installations.
Vulnerability Details
The File Manager Pro plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 8.3.4 via the mk_check_filemanager_php_syntax AJAX function. This makes it possible for authenticated attackers, with subscriber access and above, to execute code on the server. Version 8.3.5 introduces a capability check that prevents users lower than admin from executing this function.
CVSS score: 8.8 (High Severity) - The CVSS vector string is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This indicates a low attack complexity and low privileges required, with significant impacts on confidentiality, integrity, and availability.
CWE classification includes CWE-94 (Code Injection) and CWE-434 (Unrestricted File Upload).
Technical Analysis
The vulnerability arises from inadequate validation of user input in the AJAX function mk_check_filemanager_php_syntax, which allows attackers to upload malicious files to the server. The attack vector is network-based, and the complexity is considered low, making it easier for potential attackers to exploit this vulnerability without requiring advanced skills.
Privileges required are low, as authenticated users with subscriber roles can initiate the attack. There is no user interaction required, which increases the severity of the threat. The impacts are substantial, with high risk to confidentiality, integrity, and availability of the affected systems.
Risk & Impact Analysis
Risk to organizations includes potential unauthorized access to sensitive data, server compromise, and the ability to launch further attacks within the network. The blast radius of this vulnerability is significant as it can affect all instances of the File Manager Pro plugin across multiple sites if they are not updated.
Organizations should address this vulnerability in their priority patch cycle, given its high CVSS score and active exploitation potential. Continuous monitoring for signs of exploitation attempts should also be implemented to detect any malicious activities related to this vulnerability.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of the File Manager Pro plugin for WordPress prior to version 8.3.5 are affected. Organizations should ensure that they are using version 8.3.5 or later to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching their installations of the File Manager Pro plugin to version 8.3.5 or later. If a patch is unavailable, consider disabling the plugin until a fix is implemented. Additionally, implement configuration hardening practices and review user access controls to limit the privileges of authenticated users.
For comprehensive security, organizations should consider conducting penetration testing to validate the effectiveness of their security measures.
Detection Guidance
Security teams should monitor for unusual file uploads and changes to existing files within the WordPress environment. Log indicators may include AJAX requests to mk_check_filemanager_php_syntax, especially from authenticated users. Behavioral anomalies, such as sudden changes in file permissions or the presence of unexpected files, should also be investigated.
AppSecure Threat Intelligence Insight
The significance of CVE-2023-6846 lies in its potential to expose WordPress sites to severe security risks. This vulnerability underscores the importance of maintaining updated plugins and continuously assessing security postures. Organizations should adopt proactive measures, including regular security assessments and user training, to mitigate risks associated with vulnerabilities.
For further insights on enhancing security practices, organizations can refer to our resources on penetration testing methodology and consider engaging in vulnerability management programs to enhance their security posture.
Finally, organizations should remain vigilant against emerging threats and adapt their defenses accordingly. Regular updates and a proactive security strategy are critical in safeguarding against vulnerabilities like CVE-2023-6846.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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