CVE-2022-40878
Published: 27 September 2022
Summary
CVE-2022-40878 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Exam Reviewer Management System Project Exam Reviewer Management System. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 8.2% 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-2022-40878 is an unrestricted file upload vulnerability (CWE-434) affecting Exam Reviewer Management System version 1.0. The flaw resides in the profile page functionality and permits an authenticated user to upload arbitrary PHP files, including web shells, that are subsequently executed by the web server.
An attacker who possesses valid low-privileged credentials can exploit the issue remotely over the network with no user interaction required. Successful exploitation grants the ability to run arbitrary code, resulting in complete compromise of confidentiality, integrity, and availability on the target system, consistent with the CVSS 8.8 rating.
Public exploit code for the vulnerability has been published on Exploit-DB. The associated EPSS score has remained flat at 0.0722 since disclosure, indicating no material increase in observed exploitation interest.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-44134
Vulnerability details
In Exam Reviewer Management System 1.0, an authenticated attacker can upload a web-shell php file in profile page to achieve Remote Code Execution (RCE).
- 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.