CVE-2023-41746
📋 TL;DR
CVE-2023-41746 is a critical remote command execution vulnerability in Acronis Cloud Manager for Windows due to improper input validation. Attackers can execute arbitrary commands on affected systems without authentication. Organizations running Acronis Cloud Manager (Windows) versions before build 6.2.23089.203 are affected.
💻 Affected Systems
- Acronis Cloud Manager (Windows)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands with high privileges, potentially leading to data theft, ransomware deployment, or lateral movement across the network.
Likely Case
Remote attackers gaining initial foothold on the Acronis Cloud Manager server, enabling further reconnaissance, credential harvesting, and deployment of additional payloads.
If Mitigated
Limited impact with proper network segmentation and access controls, potentially only affecting the isolated Acronis management environment.
🎯 Exploit Status
The vulnerability requires no authentication and has low attack complexity according to CVSS scoring. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Build 6.2.23089.203 or later
Vendor Advisory: https://security-advisory.acronis.com/advisories/SEC-5810
Restart Required: Yes
Instructions:
1. Download the latest version from Acronis official sources. 2. Backup current configuration. 3. Install the update following Acronis documentation. 4. Restart the Acronis Cloud Manager service.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to Acronis Cloud Manager to only trusted management networks
Firewall Rules
allImplement strict firewall rules to limit inbound connections to the Acronis Cloud Manager interface
🧯 If You Can't Patch
- Isolate the Acronis Cloud Manager server from internet access and restrict internal network access to only necessary administrative systems
- Implement application-level firewall or WAF rules to filter suspicious input patterns targeting the vulnerable component
🔍 How to Verify
Check if Vulnerable:
Check the Acronis Cloud Manager version in the administration interface or via the installed program details in WindowsCheck Version:
Check via Acronis Cloud Manager web interface or Windows Programs and FeaturesVerify Fix Applied:
Verify the version is 6.2.23089.203 or later and test that the vulnerable functionality no longer accepts malicious input📡 Detection & Monitoring
Log Indicators:
- Unusual command execution events in Acronis logs
- Suspicious process creation from Acronis services
- Authentication bypass attempts
Network Indicators:
- Unexpected outbound connections from Acronis Cloud Manager server
- Suspicious payloads in HTTP requests to Acronis management interface
SIEM Query:
source="acronis" AND (event_type="command_execution" OR process_name="cmd.exe" OR process_name="powershell.exe")