CVE-2022-31943: Unrestricted Upload of File with Dangerous Type in MCMS
Summary
CVE-2022-31943: Unrestricted Upload of File with Dangerous Type in MCMS. Affects net.mingsoft:ms-mcms versions 5.2.8. No fix is published. How to fix ↓
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Background
MCMS (Mingsoft Content Management System) is a Maven package (net.mingsoft:ms-mcms) that provides content management functionality for web applications. It allows users to create, edit, and manage various types of content on their websites. MCMS version 5.2.8 has been found to have a critical vulnerability that allows for the unrestricted upload of files with dangerous types.
Vulnerability Detail
The vulnerability in MCMS v5.2.8 allows an attacker to upload arbitrary files with dangerous types. This can lead to various security risks, such as remote code execution, information disclosure, or denial of service. The lack of proper file type validation and restrictions enables an attacker to upload malicious files, which can be executed or accessed by other users of the application. This vulnerability has a CVSS score of 9.8, indicating its critical severity.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable file uploads in MCMS or implement additional server-side file type validation and restrictions. This can be done by modifying the application's configuration or implementing custom code to validate the file type before allowing the upload. Here is an example of server-side file type validation in Java:
// Example code for server-side file type validation
String uploadedFileType = getUploadedFileType();
if (!isValidFileType(uploadedFileType)) {
throw new FileUploadException("Invalid file type");
}
// Continue with file upload
Conclusion
MCMS v5.2.8 has been found to have a critical vulnerability that allows for the unrestricted upload of files with dangerous types. This vulnerability can lead to severe security risks, including remote code execution and information disclosure. It is crucial to update MCMS to a patched version as soon as possible. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for net.mingsoft:ms-mcms →
FAQ
MCMS (Mingsoft Content Management System) is a Maven package that provides content management functionality for web applications. It allows users to create, edit, and manage various types of content on their websites.
This vulnerability allows an attacker to upload arbitrary files with dangerous types, which can lead to various security risks such as remote code execution, information disclosure, or denial of service.
The CVSS score of this vulnerability is 9.8, indicating its critical severity.
To fix this vulnerability, it is recommended to update MCMS to a version that includes a patch for this issue. Users should update their installations to the latest patched version as soon as it becomes available.
As a temporary workaround, users can disable file uploads in MCMS or implement additional server-side file type validation and restrictions.
References
Related vulnerabilities
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