CVE-2025-46643
📋 TL;DR
A heap-based buffer overflow vulnerability in Dell PowerProtect Data Domain with DD OS allows high-privileged attackers with local access to cause denial of service. Affected systems include Data Domain Operating System versions 7.7.1.0 through 8.4.0.0 and specific LTS releases.
💻 Affected Systems
- Dell PowerProtect Data Domain
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash and data unavailability due to denial of service, potentially disrupting backup operations.
Likely Case
Local denial of service affecting specific Data Domain services or processes.
If Mitigated
Minimal impact due to required high privileges and local access limitations.
🎯 Exploit Status
Exploitation requires local access and high privileges (administrative/root). No public exploit code is known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to versions beyond affected ranges as specified in Dell advisory DSA-2025-415
Vendor Advisory: https://www.dell.com/support/kbdoc/en-us/000405813/dsa-2025-415-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities
Restart Required: Yes
Instructions:
1. Review Dell advisory DSA-2025-415. 2. Download appropriate DD OS update from Dell support. 3. Apply update following Dell's Data Domain upgrade procedures. 4. Reboot system as required.
🔧 Temporary Workarounds
Restrict local administrative access
allLimit local administrative access to only trusted personnel to reduce attack surface.
Implement strict access controls
allEnforce principle of least privilege and monitor for unauthorized local access attempts.
🧯 If You Can't Patch
- Implement strict physical and logical access controls to prevent unauthorized local access.
- Monitor system logs for unusual local administrative activity and denial of service indicators.
🔍 How to Verify
Check if Vulnerable:
Check DD OS version using 'version' command in Data Domain CLI and compare against affected versions.Check Version:
versionVerify Fix Applied:
Verify DD OS version is updated beyond affected ranges using 'version' command and check system stability.📡 Detection & Monitoring
Log Indicators:
- Unexpected system crashes
- Process termination errors
- Memory allocation failures in system logs
Network Indicators:
- Unusual local authentication patterns
- Increased failed local login attempts
SIEM Query:
source="data_domain" AND (event_type="crash" OR event_type="memory_error" OR event_type="privileged_access")