CVE-2023-26452
📋 TL;DR
This SQL injection vulnerability in the imageconverter service allows attackers with adjacent network access to execute arbitrary SQL queries. The vulnerability affects Open-Xchange AppSuite installations where the imageconverter service is accessible. Successful exploitation could lead to database compromise and potential data exfiltration.
💻 Affected Systems
- Open-Xchange AppSuite
📦 What is this software?
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
Open Xchange Appsuite by Open Xchange
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, and potential privilege escalation to execute operating system commands via database functions.
Likely Case
Data exfiltration from the application database, potentially exposing sensitive user information and configuration data.
If Mitigated
Limited impact due to network segmentation and proper input validation preventing SQL injection attempts.
🎯 Exploit Status
Exploitation requires adjacent network access and knowledge of the vulnerable endpoint. No public exploits are known according to the advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch release 6243 (7.10.6)
Vendor Advisory: https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0004.json
Restart Required: Yes
Instructions:
1. Download patch release 6243 from Open-Xchange. 2. Apply the patch following Open-Xchange upgrade procedures. 3. Restart the affected services. 4. Verify the fix by checking version and testing input validation.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict access to the imageconverter service to only trusted networks and systems.
# Configure firewall rules to restrict access to imageconverter service ports
# Example: iptables -A INPUT -p tcp --dport [imageconverter_port] -s [trusted_network] -j ACCEPT
# Example: iptables -A INPUT -p tcp --dport [imageconverter_port] -j DROP
Input Validation Proxy
allDeploy a web application firewall or reverse proxy to validate and sanitize requests to the imageconverter service.
# Configure WAF rules to block SQL injection patterns
# Example ModSecurity rule: SecRule ARGS "@detectSQLi" "id:1001,phase:2,deny"
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the imageconverter service from untrusted networks
- Deploy a web application firewall with SQL injection detection rules in front of the service
🔍 How to Verify
Check if Vulnerable:
Check if your Open-Xchange AppSuite version is prior to patch release 6243 (7.10.6) and if the imageconverter service is accessible from adjacent networks.Check Version:
Check Open-Xchange AppSuite version through administration interface or configuration files specific to your deployment.Verify Fix Applied:
Verify the installed version is 7.10.6 or later with patch release 6243 applied. Test that SQL injection attempts are now properly rejected and logged.📡 Detection & Monitoring
Log Indicators:
- Error logs containing SQL syntax errors
- Failed authentication attempts to imageconverter service
- Unusual database query patterns from the application service account
Network Indicators:
- Unusual traffic patterns to imageconverter service ports
- SQL injection patterns in HTTP requests to imageconverter endpoints
SIEM Query:
source="open-xchange-logs" AND (message="*SQL*" OR message="*injection*" OR message="*imageconverter*error*")🔗 References
- https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0004.json
- https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6243_7.10.6_2023-08-01.pdf
- https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0004.json
- https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6243_7.10.6_2023-08-01.pdf
