GHSA-4xwv-49c8-fvhq OpenSTAManager has a SQL Injection vulnerability in the Scadenzario bulk operations module

• Packagist devcode-it/openstamanager: <= 2.9.8 (no fix yet)

Summary Critical Error-Based SQL Injection vulnerability in the Scadenzario (Payment Schedule) bulk operations module of OpenSTAManager v2.9.8 allows authenticated attackers to extract complete database contents including user credentials, customer PII, and financial records through XML error messages. Status: ✅ Confirmed and tested on live instance (v2.9.8) Vulnerable Parameter: `id_records[]` (POST array) Affected Endpoint: `/actions.php?id_module=18` (Scadenzario module) Attack Type: Error-Based SQL Injection (IN clause) Details OpenSTAManager v2.9.8 contains a critical Error-Based SQL Injection vulnerability in the bulk operations handler for the Scadenzario (Payment Schedule) module. The application fails to validate that elements of the `id_records` array are integers before using them in an SQL IN() clause, allowing attackers to inject arbitrary SQL commands and extract sensitive data through XPATH error messages. Vulnerability Chain: 1. Entry Point: `/actions.php` (Lines 503-506) ```php $id_records = post('id_records'); $id_records = is_array($id_records) ? $id_records : explode(';', $id_records); $id_records = array_clean($id_records); $id_records = array_unique($id_records); ``` The `array_clean()` function only removes empty values - it does NOT validate types. 2. Vulnerable Function: `/lib/util.php` (Lines 54-60) ```php function array_clean($array) { if (!empty($array)) { return array_unique(array_values(array_filter($array, fn ($value) => !empty($value)))); } } ``` Impact: The function filters out empty values but accepts any non-empty value, including SQL Injection payloads. 3. SQL Injection Point: `/modules/scadenzario/bulk.php` (Line 88) PRIMARY VULNERABILITY ```php $scadenze = $database->FetchArray('SELECT * FROM co_scadenziario LEFT JOIN (SELECT id as id_nota, ref_documento FROM co_documenti)as nota ON co_scadenziario.iddocumento = nota.ref_documento WHERE co_scadenziario.id IN ('.implode(',', $id_records).') AND pagato FetchArray('SELECT * FROM co_scadenziario LEFT JOIN (SELECT id as id_nota, ref_documento FROM co_documenti)as nota ON co_scadenziario.iddocumento = nota.ref_documento WHERE co_scadenziario.id IN ('.implode(',', $id_records).') AND pagato $id > 0); // Remove zero/negative IDs $scadenze = $database->FetchArray('SELECT * FROM co_scadenziario LEFT JOIN (SELECT id as id_nota, ref_documento FROM co_documenti)as nota ON co_scadenziario.iddocumento = nota.ref_documento WHERE co_scadenziario.id IN ('.implode(',', $id_records).') AND pagato < da_pagare AND nota.id_nota IS NULL ORDER BY idanagrafica, iddocumento'); ``` Credits Discovered by Łukasz Rybak