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GHSA-c7c7-xm8g-xm36

Unrestricted Upload of File with Dangerous Type in mingsoft:ms-mcms

Source: GitHub Advisory Database (reviewed) Critical CVE-2018-18830

Packages

EcosystemPackageAffectedFixed in
Maven net.mingsoft:ms-mcms <= 4.6.5 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

An issue was discovered in com\mingsoft\basic\action\web\FileAction.java in MCMS 4.6.5. Since the upload interface does not verify the user login status, you can use this interface to upload files without setting a cookie. First, start an upload of JSP code with a .png filename, and then intercept the data packet. In the name parameter, change the suffix to jsp. In the response, the server returns the storage path of the file, which can be accessed to execute arbitrary JSP code.

References

External links from the advisory. They lead to third-party sites.