CVE-2019-25498
📋 TL;DR
Simple Job Script contains an unauthenticated SQL injection vulnerability in the landing_location parameter of the searched endpoint. Attackers can send malicious POST requests to bypass authentication and extract sensitive database information. Any system running Simple Job Script with the vulnerable endpoint exposed is affected.
💻 Affected Systems
- Simple Job Script
📦 What is this software?
Simplejobscript by Simplejobscript
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including credential theft, data exfiltration, and potential remote code execution via database functions.
Likely Case
Unauthenticated attackers extract sensitive user data, job postings, and administrative credentials from the database.
If Mitigated
Attackers can enumerate database structure but cannot extract sensitive data due to proper input validation and parameterized queries.
🎯 Exploit Status
Exploit code is publicly available on Exploit-DB and requires minimal technical skill to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown specific version - check vendor for latest release
Vendor Advisory: Unknown - no official vendor advisory found
Restart Required: No
Instructions:
1. Update Simple Job Script to latest version from official source. 2. Apply parameterized queries to landing_location parameter. 3. Implement proper input validation for all user inputs.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns in POST requests to searched endpoint
Input Validation Filter
linuxAdd server-side validation to reject suspicious characters in landing_location parameter
// PHP example: if(preg_match('/[\'"\;\-\-]/', $_POST['landing_location'])) { die('Invalid input'); }
🧯 If You Can't Patch
- Block external access to the searched endpoint using network ACLs or firewall rules
- Implement database user privilege reduction to limit damage from successful exploitation
🔍 How to Verify
Check if Vulnerable:
Send POST request to /searched endpoint with landing_location parameter containing SQL injection payload like ' OR '1'='1Check Version:
Check Simple Job Script version in admin panel or configuration filesVerify Fix Applied:
Test with same payload - should receive error or no database manipulation📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /searched endpoint with SQL keywords
- Multiple failed login attempts from single IP followed by database errors
Network Indicators:
- POST requests containing SQL injection patterns in landing_location parameter
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND uri_path="/searched" AND (request_body CONTAINS "UNION" OR request_body CONTAINS "SELECT" OR request_body CONTAINS "OR '1'='1'")