Vulnerability in Chamilo
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.139 (96.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.139 · newest: 0.139 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.chamilo.org/projects/1/wiki/Security_issues (Patch, Vendor Advisory)
- github.com/chamilo/chamilo-lms/commit/f65d065061a77bb2e84f73217079ce3998cf3453 (Patch, Third Party Advisory)
- github.com/chamilo/chamilo-lms/commit/229302139e8d23bf6862183cf219b967f6e2fbc1 (Patch, Third Party Advisory)
- packetstormsecurity.com/files/162572/Chamilo-LMS-1.11.14-Remote-Code-Execution… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-31933?
- CVE-2021-31933 is a high-severity vulnerability in Chamilo, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 7.2/10. Published 2021-04-30.
- How severe is CVE-2021-31933?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2021-31933 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.