Arbitrary File Overwrite
Vulnerability Description
The application implements an up- and downvote function which alters a value within a JSON file. The POST parameters are not filtered properly and therefore an arbitrary file can be overwritten. The file can be controlled by an authenticated attacker, the content cannot be controlled. It is possible to overwrite all files for which the webserver has write access. It is required to supply a relative path (path traversal).
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Florian Stuhlmann, Thorger Jansen (Office Bochum) | SEC Consult Vulnerability Lab
References
More from Interaction Design Team at the University of Applied Sciences and Arts in Hildesheim/Germany
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Interaction Design Team at the University of Applied Sciences and Arts in Hildesheim/Germany
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