CVE-2025-2985: Payroll Management System SQLi Vulnerability

CVE-2025-2985 Overview

CVE-2025-2985 is a SQL injection vulnerability in code-projects Payroll Management System 1.0. The flaw resides in the update_account.php file, where the deduction parameter is passed to a backend SQL query without proper sanitization. An attacker can manipulate the parameter to inject arbitrary SQL statements against the underlying database. The vulnerability is remotely exploitable and requires only low-privileged authentication. Public disclosure of the exploit details has occurred, increasing the risk of opportunistic attacks. Other parameters in the same file may also be affected. The issue is tracked under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Authenticated remote attackers can inject SQL statements through the deduction parameter in update_account.php, leading to unauthorized data access, modification, or deletion within the payroll database.

Affected Products

code-projects Payroll Management System 1.0
Vendor: Fabian
CPE: cpe:2.3:a:fabian:payroll_management_system:1.0:*:*:*:*:*:*:*

Discovery Timeline

2025-03-31 - CVE-2025-2985 published to NVD
2025-05-14 - Last updated in NVD database

Technical Details for CVE-2025-2985

Vulnerability Analysis

The vulnerability exists in the update_account.php script of the Payroll Management System. The application accepts the deduction argument from an HTTP request and concatenates it directly into a SQL statement. Because the input is not parameterized or escaped, an attacker can break out of the intended query context and append arbitrary SQL clauses. Successful exploitation can expose payroll records, modify salary or deduction values, or enumerate database contents through UNION-based or boolean-based techniques. According to the vendor advisory, other parameters in the same script may also be vulnerable to the same injection pattern.

Root Cause

The root cause is the absence of prepared statements or input sanitization when processing the deduction parameter. User-controlled data flows directly into a dynamically constructed SQL query, satisfying the conditions described in [CWE-74]. The application lacks both server-side input validation and use of bound parameters, allowing attacker-supplied content to alter query semantics.

Attack Vector

The attack vector is network-based and remote. An authenticated user with low privileges submits a crafted HTTP request to update_account.php containing malicious SQL fragments in the deduction field. No user interaction is required beyond the attacker's own request. The vulnerability has been publicly disclosed, including indicators that other parameters in the same endpoint may be exploitable through equivalent payloads.

No verified proof-of-concept code is available. For technical write-up details, see the GitHub CVE Information and the VulDB #302037 Detail entries.

Detection Methods for CVE-2025-2985

Indicators of Compromise

HTTP POST or GET requests targeting update_account.php with SQL meta-characters (', --, UNION, SLEEP, OR 1=1) inside the deduction parameter
Unexpected modifications to payroll records, especially deduction or salary fields, outside normal business workflows
Web server logs showing repeated 500-series errors or anomalous response sizes from update_account.php
Unusual outbound database queries originating from the Payroll Management System web tier

Detection Strategies

Deploy web application firewall (WAF) signatures that flag SQL injection payloads against the update_account.php endpoint
Enable database query auditing to capture statements referencing the deduction column or originating from the payroll application user
Correlate authentication logs with subsequent requests to update_account.php to identify low-privilege accounts probing the endpoint

Monitoring Recommendations

Stream web access logs, database audit logs, and application error logs into a centralized SIEM for cross-source correlation
Alert on multiple failed SQL statements or syntax errors followed by successful queries from the same session
Baseline normal request patterns to update_account.php and trigger on volumetric or payload anomalies

How to Mitigate CVE-2025-2985

Immediate Actions Required

Restrict network access to the Payroll Management System to trusted internal users until a patch is applied
Disable or remove the update_account.php endpoint if it is not actively required
Rotate database credentials used by the application and audit recent changes to payroll records
Review authentication logs for unauthorized account creations or privilege changes

Patch Information

No official vendor patch has been published in the referenced advisories. Organizations should consult the Code Projects Security Resources site for updates and monitor the VulDB #302037 entry for remediation guidance. In the absence of an upstream fix, apply source-code remediation by converting the affected query to use parameterized statements with bound variables.

Workarounds

Implement a WAF rule to block SQL meta-characters submitted to update_account.php and similar endpoints
Enforce least-privilege database accounts so the application cannot perform DDL or access unrelated tables
Add server-side input validation to reject non-numeric values in the deduction parameter
Apply rate limiting and account lockout policies to reduce automated injection attempts

bash

# Example ModSecurity rule to block SQLi patterns against update_account.php
SecRule REQUEST_URI "@contains /update_account.php" \
  "id:1002985,phase:2,deny,status:403,\
   chain,msg:'Potential SQLi in deduction parameter (CVE-2025-2985)'"
  SecRule ARGS:deduction "@rx (?i)(union|select|sleep|or\s+1=1|--|;)" \
    "t:none,t:urlDecodeUni"