CVE-2023-50589
📋 TL;DR
This SQL injection vulnerability in Grupo Embras GEOSIAP ERP allows attackers to execute arbitrary SQL commands via the codLogin parameter on the login page. Attackers can potentially bypass authentication, access sensitive data, or compromise the database server. All users running the affected version are at risk.
💻 Affected Systems
- Grupo Embras GEOSIAP ERP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, authentication bypass, remote code execution on the database server, and potential lateral movement to other systems.
Likely Case
Authentication bypass allowing unauthorized access to the ERP system, followed by data exfiltration and privilege escalation within the application.
If Mitigated
Failed login attempts logged, no data access or system compromise if proper input validation and parameterized queries are implemented.
🎯 Exploit Status
SQL injection on login pages is a common attack vector with readily available tools and techniques. The public proof-of-concept demonstrates exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Contact Grupo Embras for patch availability. 2. If patch exists, download and apply according to vendor instructions. 3. Test the fix in a non-production environment first.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allImplement WAF rules to block SQL injection patterns in the codLogin parameter
Input Validation Filter
allAdd server-side input validation to reject suspicious characters in login fields
🧯 If You Can't Patch
- Implement a reverse proxy with strict input validation for the login endpoint
- Isolate the ERP system in a segmented network with strict access controls
🔍 How to Verify
Check if Vulnerable:
Test the login page with SQL injection payloads in the codLogin parameter (e.g., ' OR '1'='1) and observe if authentication is bypassed or error messages reveal SQL details.Check Version:
Check application version in the interface or configuration files; specific command depends on deployment method.Verify Fix Applied:
Attempt the same SQL injection tests after remediation; successful login should only occur with valid credentials, and no SQL errors should be displayed.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed login attempts with SQL-like patterns
- Successful logins from unusual IP addresses or at odd hours
Network Indicators:
- HTTP requests to login page containing SQL keywords in parameters
- Unusual database query patterns from the application server
SIEM Query:
source="application.log" AND ("sql" OR "syntax" OR "union" OR "select") AND "login"🔗 References
- https://cheatsheetseries.owasp.org/cheatsheets/SQL_Injection_Prevention_Cheat_Sheet.html
- https://github.com/VauP/CVE-IDs/blob/main/proof_of_concept.md
- https://owasp.org/www-community/attacks/SQL_Injection
- https://cheatsheetseries.owasp.org/cheatsheets/SQL_Injection_Prevention_Cheat_Sheet.html
- https://github.com/VauP/CVE-IDs/blob/main/proof_of_concept.md
- https://owasp.org/www-community/attacks/SQL_Injection
