{"id":"CVE-2023-3545","state":"PUBLISHED","title":"Chamilo LMS Htaccess File Upload Security Bypass","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.","publishedAt":"2023-11-28T07:07:27.183Z","updatedAt":"2024-08-02T07:01:57.437Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"STAR_Labs"},"assigner":"STAR_Labs","products":["Chamilo Chamilo"],"affected":[{"vendor":"Chamilo","product":"Chamilo","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.11.20","versionType":"semver"}],"platforms":["Windows"],"repo":"https://github.com/chamilo/chamilo-lms/"}],"references":["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","https://starlabs.sg/advisories/23/23-3545/","https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549"],"weaknesses":["CWE-178"],"ingestedAt":"2026-10-29T20:06:08.715Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/3xxx/CVE-2023-3545.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-3545","state":"PUBLISHED","datePublished":"2023-11-28T07:07:27.183Z","dateUpdated":"2024-08-02T07:01:57.437Z","assignerShortName":"STAR_Labs","assignerOrgId":"b1571b85-cbc9-431f-830b-0c8155323a69","dateReserved":"2023-07-07T13:10:48.745Z"},"containers":{"cna":{"title":"Chamilo LMS Htaccess File Upload Security Bypass","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Chamilo","product":"Chamilo","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.11.20","versionType":"semver"}],"platforms":["Windows"],"repo":"https://github.com/chamilo/chamilo-lms/"}],"references":[{"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","tags":["vendor-advisory"]},{"url":"https://starlabs.sg/advisories/23/23-3545/","tags":["third-party-advisory"]},{"url":"https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549","tags":["patch"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-178","description":"CWE-178 Improper Handling of Case Sensitivity","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"STAR_Labs","orgId":"b1571b85-cbc9-431f-830b-0c8155323a69","dateUpdated":"2023-11-28T07:07:27.183Z"},"credits":[{"lang":"en","type":"finder","user":"00000000-0000-4000-9000-000000000000","value":"Ngo Wei Lin (@Creastery) of STAR Labs SG Pte. Ltd. (@starlabs_sg)"}],"impacts":[{"capecId":"CAPEC-650","descriptions":[{"lang":"en","value":"CAPEC-650 Upload a Web Shell to a Web Server"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CVE Program Container","references":[{"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","tags":["vendor-advisory","x_transferred"]},{"url":"https://starlabs.sg/advisories/23/23-3545/","tags":["third-party-advisory","x_transferred"]},{"url":"https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549","tags":["patch","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T07:01:57.437Z"}}]}}}