CVE-2025-54959
📋 TL;DR
Powered BLUE Server versions 0.20130927 and prior contain a path traversal vulnerability that allows attackers to read arbitrary files on the server. This affects organizations using vulnerable versions of Powered BLUE Server software. The vulnerability could lead to unauthorized disclosure of sensitive information.
💻 Affected Systems
- Powered BLUE Server
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could read sensitive system files like /etc/passwd, configuration files, or application secrets, potentially leading to full system compromise.
Likely Case
Attackers would read application configuration files, log files, or other accessible data to gather information for further attacks.
If Mitigated
With proper file permissions and access controls, impact would be limited to non-sensitive files within the application's intended scope.
🎯 Exploit Status
Exploitation requires understanding of the application's file structure and may require authentication depending on configuration.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 0.20130927
Vendor Advisory: https://www.mubit.co.jp/sub/products/blue/pb-base-cloud-890.html
Restart Required: No
Instructions:
1. Check current version using version check command. 2. Download and install the latest version from the vendor website. 3. Verify the fix using verification steps.
🔧 Temporary Workarounds
Implement input validation
allAdd server-side validation to reject path traversal sequences like '../' in file requests
Restrict file access permissions
allConfigure file system permissions to limit what files the application can read
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block path traversal patterns
- Isolate the server in a restricted network segment with limited access
🔍 How to Verify
Check if Vulnerable:
Check if version is 0.20130927 or earlier using the version check commandCheck Version:
Check application documentation for version command, typically in admin interface or configuration filesVerify Fix Applied:
Test that path traversal attempts (e.g., requests with '../' sequences) are properly rejected📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns
- Requests containing '../' or similar traversal sequences
- Access to files outside expected directories
Network Indicators:
- HTTP requests with path traversal patterns in URLs or parameters
SIEM Query:
source="web_server" AND (uri="*../*" OR param="*../*")