CVE-2023-26101
📋 TL;DR
This path traversal vulnerability in Progress Flowmon Packet Investigator allows authenticated users to access arbitrary files on the local filesystem. It affects Flowmon Packet Investigator versions before 12.1.0. Users with access to the Packet Investigator interface can exploit this to read sensitive system files.
💻 Affected Systems
- Progress Flowmon Packet Investigator
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could read sensitive configuration files, credentials, or system files, potentially leading to full system compromise through credential theft or privilege escalation.
Likely Case
Authenticated users reading configuration files, logs, or other sensitive data stored on the filesystem.
If Mitigated
Limited file access within user permissions, but still unauthorized access to files outside intended directories.
🎯 Exploit Status
Requires authenticated access to Flowmon Packet Investigator. Path traversal vulnerabilities are typically straightforward to exploit once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 12.1.0
Vendor Advisory: https://support.kemptechnologies.com/hc/en-us/articles/12737582619789
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Upgrade Flowmon Packet Investigator to version 12.1.0 or later. 3. Restart the Flowmon appliance. 4. Verify the upgrade was successful.
🔧 Temporary Workarounds
Restrict user access
allLimit access to Flowmon Packet Investigator interface to only necessary users
Network segmentation
allIsolate Flowmon appliance network to prevent unauthorized access
🧯 If You Can't Patch
- Implement strict access controls and monitor user activity on Flowmon Packet Investigator
- Deploy file integrity monitoring on critical system files
🔍 How to Verify
Check if Vulnerable:
Check Flowmon Packet Investigator version in administration interface or via CLI: show versionCheck Version:
show versionVerify Fix Applied:
Confirm version is 12.1.0 or later and test path traversal attempts are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns in Flowmon logs
- Multiple failed path traversal attempts
Network Indicators:
- Unusual HTTP requests with directory traversal patterns to Flowmon interface
SIEM Query:
source="flowmon" AND (http_uri="*../*" OR http_uri="*..\\*" OR http_uri="*%2e%2e%2f*")