CVE-2023-26439
📋 TL;DR
This SQL injection vulnerability in the cacheservice API allows attackers with local or restricted network access to execute arbitrary SQL queries. This can lead to unauthorized access to cached user data. The vulnerability affects OX App Suite installations with insufficient input sanitization.
💻 Affected Systems
- OX App Suite
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could extract sensitive cached user data, potentially including authentication tokens, personal information, or application data, leading to full system compromise.
Likely Case
Unauthorized access to cached session data or user information, potentially enabling privilege escalation or data theft.
If Mitigated
With proper network segmentation and access controls, impact is limited to authorized users only.
🎯 Exploit Status
Exploitation requires network access to the vulnerable endpoint but no authentication
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.10.6 rev 6230
Vendor Advisory: https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0003.json
Restart Required: Yes
Instructions:
1. Download patch release 6230 from Open-Xchange portal. 2. Apply the patch according to OX App Suite update procedures. 3. Restart affected services.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to cacheservice API endpoints to trusted hosts only
iptables -A INPUT -p tcp --dport [cacheservice-port] -s [trusted-network] -j ACCEPT
iptables -A INPUT -p tcp --dport [cacheservice-port] -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate cacheservice from untrusted networks
- Deploy web application firewall with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check OX App Suite version against affected versions listCheck Version:
Check OX App Suite admin interface or configuration files for version informationVerify Fix Applied:
Verify installation of patch release 6230 and test API input validation📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns in application logs
- Multiple failed API calls with SQL syntax in parameters
Network Indicators:
- Unusual traffic to cacheservice API endpoints
- SQL keywords in HTTP request parameters
SIEM Query:
source="appsuite.log" AND ("SQL" OR "SELECT" OR "UNION") AND "cacheservice"🔗 References
- http://packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site-Scripting.html
- http://seclists.org/fulldisclosure/2023/Aug/8
- https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0003.json
- https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6230_7.10.6_2023-05-02.pdf
- http://packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site-Scripting.html
- http://seclists.org/fulldisclosure/2023/Aug/8
- https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0003.json
- https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6230_7.10.6_2023-05-02.pdf
