جزئیات آسیب‌پذیری

Emlog is an open source website building system. emlog v2.6.1 and earlier exposes a REST API endpoint (/index.php?rest-api=upload) for media file uploads. The endpoint fails to implement proper validation of file types, extensions, and content, allowing authenticated attackers (with a valid API key or admin session cookie) to upload arbitrary files (including malicious PHP scripts) to the server. An attacker can obtain the API key either by gaining administrator access to enable the REST API setting, or via information disclosure vulnerabilities in the application. Once uploaded, the malicious PHP file can be executed to gain remote code execution (RCE) on the target server, leading to full server compromise.

• https://github.com/emlog/emlog/commit/429b02fda842254b9b9b39303e9161999c180560 x_refsource_MISC
• https://github.com/emlog/emlog/security/advisories/GHSA-p837-mrw9-5x5j x_refsource_CONFIRM