CVE-2023-48253
📋 TL;DR
This SQL injection vulnerability in Bosch security systems allows authenticated attackers to manipulate the authentication database through crafted HTTP requests. Attackers can read password hashes to potentially crack them or overwrite them to gain unauthorized account access. This affects authenticated users of vulnerable Bosch systems.
💻 Affected Systems
- Bosch Access Professional Edition
- Bosch Building Integration System
📦 What is this software?
Nexo Os by Bosch
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all user accounts through password hash exfiltration or overwriting, leading to unauthorized access, privilege escalation, and potential system takeover.
Likely Case
Targeted account takeover of specific users, credential theft, and potential lateral movement within the system.
If Mitigated
Limited to authenticated users only, with proper input validation and database permissions preventing successful exploitation.
🎯 Exploit Status
SQL injection vulnerabilities are commonly exploited with readily available tools. Authentication requirement adds one barrier.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 4.9.1 or later
Vendor Advisory: https://psirt.bosch.com/security-advisories/BOSCH-SA-711465.html
Restart Required: Yes
Instructions:
1. Download Bosch Access Professional Edition/Building Integration System version 4.9.1 or later from official Bosch portal. 2. Backup current configuration and database. 3. Run installer with administrative privileges. 4. Restart system after installation completes.
🔧 Temporary Workarounds
Network Segmentation
allRestrict access to vulnerable systems to only trusted networks and users
Web Application Firewall
allDeploy WAF with SQL injection protection rules
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Monitor authentication logs for unusual database access patterns
🔍 How to Verify
Check if Vulnerable:
Check system version in web interface or via installed software list. If version is below 4.9.1, system is vulnerable.Check Version:
Check web interface login page or installed programs list for version informationVerify Fix Applied:
Confirm version is 4.9.1 or higher in system settings. Test authentication functionality remains operational.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed authentication attempts followed by success
- Authentication from unexpected IP addresses
Network Indicators:
- HTTP requests with SQL-like patterns in parameters
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND (url="*SELECT*" OR url="*UPDATE*" OR url="*DELETE*") AND (param="*password*" OR param="*hash*")