CVE-2023-3836
Published: 22 July 2023
Summary
CVE-2023-3836 is a medium-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Dahuasecurity Smart Parking Management. Its CVSS base score is 6.3 (Medium).
Operationally, ranked in the top 0.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-3836 is an unrestricted file upload vulnerability, tracked under CWE-434, that affects the Dahua Smart Park Management platform in versions up to 20230713. The flaw exists in the /emap/devicePoint_addImgIco endpoint when the hasSubsystem parameter is set to true; an attacker can manipulate the upload argument to bypass restrictions and place arbitrary files on the server.
An authenticated remote attacker with low privileges can exploit the issue over the network without user interaction to upload malicious content, achieving limited impacts on confidentiality, integrity, and availability as reflected in the CVSS 6.3 score. The vendor was notified prior to disclosure but provided no response, and a working exploit has been published publicly.
The associated EPSS score currently stands at 0.9145 with a recorded peak of 0.9241, indicating sustained exploitation interest after public release. References such as the GitHub disclosure and Vuldb entries contain further technical details but no vendor-supplied patches or configuration guidance.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-44464
Vulnerability details
A vulnerability classified as critical was found in Dahua Smart Park Management up to 20230713. This vulnerability affects unknown code of the file /emap/devicePoint_addImgIco?hasSubsystem=true. The manipulation of the argument upload leads to unrestricted upload. The attack can be initiated remotely.…
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The exploit has been disclosed to the public and may be used. VDB-235162 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.