ProjectPier 0.8.8 SQL Injection / Authentication Bypass / RFI

Credit: Imre Rad
Risk: High
Local: No
Remote: Yes

"ProjectPier is a Free, Open-Source, PHP application for managing tasks, projects and teams through an intuitive web interface." I reached out to the vendor via several channels to report the findings below, but received no response. Since the project is abandoned (latest commits are 3 years old), I decided to go for full disclosure. The vulnerable versions are 0.8.8 and below. Vulnerability #1 (CVE-2018-10759): The PHP file (public/patch/patch.php) is public facing, accessible without authentication and is vulnerable to PHP remote file inclusion attacks since the id parameter is not sanitized. As a consequence of this, attackers could execute arbitrary commands via the expect:// fopen wrapper or execute arbitrary SQL statements. Remediation: Decommission the application or at least remove the affected file. Vulnerability #2 (CVE-2018-10760): The official Files plugin of ProjectPier is a file management plugin offering file uploads for the authentication users having the appropriate permissions granted. The files are uploaded into the subdirectory /tmp under the document root. The plugin does not enforce any security controls regarding the type/content of the file being uploaded, which could be abused by malicious users to execute arbitrary PHP code by uploading it via this plugin. Remediation: Decommission the application or revoke access privileges to the plugin.

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