CVE-2021-31933

A remote code execution vulnerability exists in Chamilo through 1.11.14 due to improper input sanitization of a parameter used for file uploads, and improper file-extension filtering for certain filenames (e.g., .phar or .pht). A remote authenticated administrator is able to upload a file containing arbitrary PHP code into specific directories via main/inc/lib/fileUpload.lib.php directory traversal to achieve PHP code execution.

CVSS v3.1 NVD

7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

6.5 MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P

EPSS

13.93% chance of exploitation in the next 30 days, 97th percentile

Published

2021-04-30

Updated

2024-08-03

Proof-of-concept exploits (1)

• http://packetstormsecurity.com/files/162572/Chamilo-LMS-1.11.14-Remote-Code-Execution.html

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/49867

Security advisories

• https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-48-2021-04-17-Critical-…
• chamilo/chamilo-lms/commit/229302139e8d23bf6862183cf219b967f6e2fbc1

References

• CVE Record
• NVD entry