{"id":"CVE-2023-3545","summary":"Chamilo LMS Htaccess File Upload Security Bypass","details":"Improper sanitisation in `main/inc/lib/fileUpload.lib.php` in Chamilo LMS \u003c= 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.","modified":"2026-08-12T03:51:27.406333946Z","published":"2023-11-28T07:07:27.183Z","database_specific":{"cna_assigner":"STAR_Labs","cwe_ids":["CWE-178"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3545.json"},"references":[{"type":"WEB","url":"https://github.com/chamilo/chamilo-lms/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3545.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3545"},{"type":"ADVISORY","url":"https://starlabs.sg/advisories/23/23-3545/"},{"type":"ADVISORY","url":"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-2023-3545"},{"type":"FIX","url":"https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chamilo/chamilo-lms","events":[{"introduced":"0"},{"fixed":"dc7bfce429fbd843a95a57c184b6992c4d709549"}],"database_specific":{"cpe":"cpe:2.3:a:chamilo:chamilo:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.11.20"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v1.11.20-beta.1","v1.11.20","v1.11.18","v1.11.14","v1.11.14-beta.1","v1.11.12","v1.11.10","v1.11.6","v1.11.6-alpha.1","v1.9.8","CHAMILO_1_9_6_STABLE","CHAMILO_1_9_6_RC_2","CHAMILO_1_9_6_RC_1","CHAMILO_1_9_4_STABLE","CHAMILO_1_9_4_RC_1","CHAMILO_1_9_4_ALPHA_1","CHAMILO_1_9_2_STABLE_QUARTER","CHAMILO_1_9_2_STABLE","CHAMILO_1_9_0_STABLE_3","CHAMILO_1_9_0_STABLE_2","CHAMILO_1_9_0_RC_1","CHAMILO_1_8_8_4_STABLE","CHAMILO_1_9_0_ALPHA_4","CHAMILO_1_9_0_ALPHA_2","CHAMILO_1_9_0_ALPHA_1","CHAMILO_1_9_0_PRE_ALPHA","CHAMILO_1_8_8.3_STABLE_4","CHAMILO_1_8_8_2_STABLE_2","CHAMILO_1_8_8_2_STABLE","CHAMILO_1_8_8_2_RC_1","CHAMILO_1_8_8_BETA_2","CHAMILO_1_8_8_BETA_1","CHAMILO_1_8_8_ALPHA","CHAMILO_1_8_7_STABLE_BIS","CHAMILO_1_8_7_STABLE","CHAMILO_1_8_7_RC2","CHAMILO_1_8_7_RC_1","CHAMILO_1_8_7_ALPHA_2","CHAMILO_1_8_7_ALPHA_1","v1.8.6.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-3545.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}