CVE-2025-51683: Mjobtime SQL Injection Vulnerability

CVE-2025-51683 Overview

CVE-2025-51683 is a blind SQL Injection vulnerability in mJobtime v15.7.2, a time management software application. The flaw resides in the /Default.aspx/update_profile_Server endpoint, which fails to properly sanitize user-supplied input before incorporating it into SQL queries. Unauthenticated remote attackers can submit a crafted POST request to execute arbitrary SQL statements against the backend database. The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command).

Critical Impact
Unauthenticated attackers can execute arbitrary SQL statements over the network, leading to full compromise of confidentiality, integrity, and availability of the underlying database.

Affected Products

mJobtime v15.7.2
Vendor: mjobtime
CPE: cpe:2.3:a:mjobtime:mjobtime:15.7.2:*:*:*:*:*:*:*

Discovery Timeline

2025-12-01 - CVE-2025-51683 published to NVD
2025-12-04 - Last updated in NVD database

Technical Details for CVE-2025-51683

Vulnerability Analysis

The vulnerability exists in the update_profile_Server method exposed through the /Default.aspx/update_profile_Server endpoint of mJobtime v15.7.2. The application accepts attacker-controlled parameters in a POST request and concatenates them into a SQL query without parameterization or input validation. Because the endpoint is reachable without authentication, any network-adjacent attacker can interact with it directly.

This is a blind SQL injection variant, meaning the application does not return query results or verbose database errors in the HTTP response. Attackers infer data by observing boolean conditions or time-based delays. Despite the indirect nature of blind SQLi, automated tooling such as sqlmap can systematically extract entire database contents.

Root Cause

The root cause is improper neutralization of special elements in SQL commands ([CWE-89]). The update_profile_Server handler constructs SQL statements using dynamic string concatenation rather than parameterized queries or stored procedures with safe bindings. Combined with the absence of an authentication check on the endpoint, this exposes the database directly to unauthenticated network traffic.

Attack Vector

An attacker sends a crafted HTTP POST request to /Default.aspx/update_profile_Server containing malicious SQL payloads embedded in profile parameters. The injected SQL executes within the database context used by the application. Successful exploitation can disclose user credentials, modify time-tracking records, escalate privileges within the database, or, depending on backend permissions, pivot toward remote code execution as referenced in the associated Infoguard advisory.

No public proof-of-concept exploit code is currently available. See the Infoguard advisory for additional technical context.

Detection Methods for CVE-2025-51683

Indicators of Compromise

Unexpected POST requests to /Default.aspx/update_profile_Server containing SQL keywords such as SELECT, UNION, WAITFOR, SLEEP, or BENCHMARK.
HTTP requests to the endpoint from unauthenticated sessions or unfamiliar source IP addresses.
Anomalous database query latency or repeated time-delay patterns correlating with web request bursts.
Web server logs showing high volumes of POST requests with encoded characters such as %27, %22, or -- in body parameters.

Detection Strategies

Deploy a web application firewall rule that inspects POST bodies sent to /Default.aspx/update_profile_Server for SQL metacharacters and conditional logic.
Enable database audit logging to capture queries originating from the mJobtime application user and alert on unusual query structures.
Correlate IIS or ASP.NET logs with database query telemetry to identify requests that produce abnormally long response times.

Monitoring Recommendations

Monitor for repeated 200-status POST requests to the vulnerable endpoint from a single source over short time windows.
Track outbound database connection volume from the application server for anomalies indicating data exfiltration.
Alert on creation of new database accounts, role changes, or schema modifications made by the mJobtime service account.

How to Mitigate CVE-2025-51683

Immediate Actions Required

Restrict network access to mJobtime servers using firewall rules, allowing only trusted management networks until a patch is applied.
Place the application behind a web application firewall configured to block SQL injection patterns on the /Default.aspx/update_profile_Server endpoint.
Rotate database credentials and review database user privileges to ensure the application account follows least privilege.
Audit recent traffic to the affected endpoint and database logs for signs of prior exploitation.

Patch Information

No vendor patch has been published in the NVD record at the time of writing. Consult the mJobtime vendor site and the Infoguard advisory for updated remediation guidance and patched releases.

Workarounds

Block external access to /Default.aspx/update_profile_Server at the reverse proxy or WAF layer until a fix is available.
Enforce strict input validation at an upstream proxy, rejecting requests containing SQL syntax in profile fields.
Disable or remove the mJobtime application from internet-facing infrastructure if business operations permit.

bash

# Example WAF rule (ModSecurity) to block SQLi patterns on the vulnerable endpoint
SecRule REQUEST_URI "@streq /Default.aspx/update_profile_Server" \
    "id:1005183,phase:2,deny,status:403,log,\
    chain,msg:'Block potential SQLi against mJobtime CVE-2025-51683'"
    SecRule REQUEST_BODY "@rx (?i)(union(\s|/\*.*\*/)+select|select.+from|waitfor\s+delay|sleep\s*\(|benchmark\s*\(|--|;)" \
        "t:none,t:urlDecodeUni"