CVE-2023-45355
📋 TL;DR
This vulnerability allows authenticated attackers to execute arbitrary commands on the Atos Unify OpenScape 4000 Platform operating system, potentially gaining administrative access. It affects OpenScape 4000 Platform V10 R1 and Manager Platform V10 R1 before specific hotfix versions. Attackers need valid credentials to exploit this command injection flaw.
💻 Affected Systems
- Atos Unify OpenScape 4000 Platform
- Atos Unify OpenScape Manager Platform
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full administrative compromise of the platform, allowing complete system control, data exfiltration, and lateral movement to connected systems.
Likely Case
Privilege escalation leading to administrative access, enabling configuration changes, service disruption, and potential data access.
If Mitigated
Limited impact if proper network segmentation, least privilege access, and monitoring are implemented, though risk remains until patched.
🎯 Exploit Status
Exploitation requires authenticated access but command injection vulnerabilities are typically straightforward to exploit once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Hotfix V10 R1.42.2 or later
Vendor Advisory: https://networks.unify.com/security/advisories/OBSO-2308-02.pdf
Restart Required: Yes
Instructions:
1. Download Hotfix V10 R1.42.2 from official Unify sources. 2. Apply the hotfix following vendor documentation. 3. Restart affected services/systems as required. 4. Verify successful installation.
🔧 Temporary Workarounds
Restrict Web Service Access
linuxLimit network access to the vulnerable webservice interface to only trusted administrative networks.
iptables -A INPUT -p tcp --dport [webservice_port] -s [trusted_network] -j ACCEPT
iptables -A INPUT -p tcp --dport [webservice_port] -j DROP
Implement Strong Authentication Controls
allEnforce multi-factor authentication and strong password policies for all accounts with access to the webservice.
🧯 If You Can't Patch
- Isolate affected systems in a dedicated network segment with strict firewall rules
- Implement application-level monitoring for suspicious command execution patterns
🔍 How to Verify
Check if Vulnerable:
Check system version via administrative interface or CLI. If version is V10 R1 and hotfix version is earlier than V10 R1.42.2, system is vulnerable.Check Version:
Check via platform-specific administrative commands or web interface system info pageVerify Fix Applied:
Verify installed version shows Hotfix V10 R1.42.2 or later in system information.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns in webservice logs
- Multiple failed authentication attempts followed by successful login and command execution
- Administrative privilege escalation events
Network Indicators:
- Unusual outbound connections from the platform to external systems
- Traffic patterns indicating data exfiltration
SIEM Query:
source="openscape_webservice" AND (event="command_execution" OR event="privilege_escalation")🔗 References
- https://networks.unify.com/security/advisories/OBSO-2308-02.pdf
- https://www.news.de/technik/857079218/unify-openscape-4000-gefaehrdet-it-sicherheitswarnung-vom-bsi-und-bug-report-betroffene-systeme-und-produkte-neue-versionen-und-updates/1/
- https://networks.unify.com/security/advisories/OBSO-2308-02.pdf
- https://www.news.de/technik/857079218/unify-openscape-4000-gefaehrdet-it-sicherheitswarnung-vom-bsi-und-bug-report-betroffene-systeme-und-produkte-neue-versionen-und-updates/1/
