CVE-2023-3852
Published: 23 July 2023
Summary
CVE-2023-3852 is a medium-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Yuque Rapidcms. Its CVSS base score is 4.7 (Medium).
Operationally, ranked in the top 9.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A vulnerability tracked as CVE-2023-3852 affects OpenRapid RapidCMS versions up to 1.3.1. It resides in the /admin/upload.php file and stems from insufficient validation of the file argument, enabling unrestricted file uploads and corresponding to CWE-434. The issue received a CVSS 3.1 score of 4.7 with a network attack vector and high privileges required.
An authenticated administrator can remotely supply a crafted file argument to upload arbitrary content to the server. Successful exploitation grants limited read, write, and impact capabilities on the affected system, and a working proof-of-concept has been made public.
The maintainers addressed the flaw in commit 4dff387283060961c362d50105ff8da8ea40bcbe on the project repository, and applying this patch is the recommended mitigation. The associated EPSS score has remained flat at 0.0549 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-44480
Vulnerability details
A vulnerability was found in OpenRapid RapidCMS up to 1.3.1. It has been declared as critical. This vulnerability affects unknown code of the file /admin/upload.php. The manipulation of the argument file leads to unrestricted upload. The attack can be initiated…
more
remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 4dff387283060961c362d50105ff8da8ea40bcbe. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-235204.
- 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.