CVE-2025-26481
📋 TL;DR
Dell PowerScale OneFS versions 9.4.0.0 through 9.9.0.0 contain an uncontrolled resource consumption vulnerability. A remote unauthenticated attacker can exploit this to cause denial of service by exhausting system resources. This affects all PowerScale OneFS deployments running vulnerable versions.
💻 Affected Systems
- Dell PowerScale OneFS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system unavailability affecting all storage services, potentially causing business disruption and data access loss.
Likely Case
Degraded performance or temporary service interruption affecting specific storage nodes or services.
If Mitigated
Limited impact with proper network segmentation and resource monitoring in place.
🎯 Exploit Status
CWE-400 vulnerabilities typically involve simple resource exhaustion attacks that don't require complex exploitation techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 9.9.0.0 (check Dell advisory for specific patched versions)
Vendor Advisory: https://www.dell.com/support/kbdoc/en-us/000256645/dsa-2024-453-security-update-for-dell-powerscale-onefs-multiple-security-vulnerabilities
Restart Required: Yes
Instructions:
1. Review Dell advisory DSA-2024-453. 2. Download appropriate OneFS update from Dell support. 3. Apply update following Dell's upgrade procedures. 4. Reboot affected nodes as required.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to PowerScale management interfaces to trusted networks only.
Resource Monitoring
allImplement monitoring for unusual resource consumption patterns on PowerScale nodes.
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure to trusted sources only.
- Deploy rate limiting and resource usage monitoring to detect and block exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check OneFS version using 'isi version' command and compare against affected range 9.4.0.0-9.9.0.0.Check Version:
isi versionVerify Fix Applied:
Verify version is updated beyond 9.9.0.0 using 'isi version' and check Dell advisory for specific patched versions.📡 Detection & Monitoring
Log Indicators:
- Unusual resource consumption patterns
- Multiple connection attempts from single sources
- System performance degradation alerts
Network Indicators:
- High volume of requests to PowerScale interfaces
- Traffic patterns indicating resource exhaustion attempts
SIEM Query:
source="powerscale" AND (resource_usage>threshold OR connection_rate>normal)