CVE-2019-25647

CVE-2019-25647 is a remote code execution vulnerability affecting PhreeBooks ERP version 5.2.3, specifically in the image manager component. The flaw allows authenticated attackers to upload arbitrary PHP files by bypassing file extension controls, enabling subsequent execution of malicious code. It is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type) and carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its network accessibility, low attack complexity, and potential for complete confidentiality, integrity, and availability impacts.

Authenticated attackers with low privileges can exploit this vulnerability remotely by accessing the image manager endpoint to upload PHP shells or backdoors disguised with allowable extensions. Successful exploitation grants attackers the ability to execute arbitrary system commands, establish reverse shell connections, and potentially achieve full server compromise, as the uploaded files can be triggered directly on the server.

References include a proof-of-concept exploit on Exploit-DB (46645), a detailed advisory from Vulncheck on the PhreeBooks ERP remote code execution via image manager, and project sites such as SourceForge and PhreeSoft, which may provide additional context or updates on patches, though specific mitigation steps are outlined in those advisories.