CVE-2023-3545
Improper sanitisation in `main/inc/lib/fileUpload.lib.php` in Chamilo LMS <= v1.11.20 on Windows and Apache installations allows unauthenticated attackers to bypass file upload security protections and obtain remote code execution via uploading of…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Improper sanitisation in `main/inc/lib/fileUpload.lib.php` in Chamilo LMS <= v1.11.20 on Windows and Apache installations allows unauthenticated attackers to bypass file upload security protections and obtain remote code execution via uploading of `.htaccess` file. This vulnerability may be exploited by privileged attackers or chained with unauthenticated arbitrary file write vulnerabilities, such as CVE-2023-3533, to achieve remote code execution.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.44% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-178
- Affected
- chamilo/chamilo
- Source
- info@starlabs.sg
References
- https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549Patch
- https://starlabs.sg/advisories/23/23-3545/Exploit, Third Party Advisory
- https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-125-2023-07-13-Critical-impact-Moderate-risk-Htaccess-File-Upload-Security-Bypass-on-Windows-CVE-2023-3545Issue Tracking, Vendor Advisory
- https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549Patch
- https://starlabs.sg/advisories/23/23-3545/Exploit, Third Party Advisory
- https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-125-2023-07-13-Critical-impact-Moderate-risk-Htaccess-File-Upload-Security-Bypass-on-Windows-CVE-2023-3545Issue Tracking, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.