CVE-2024-25661
📋 TL;DR
CVE-2024-25661 allows guest OS administrators on systems running Infinera TNMS Client 19.10.3 to extract user passwords from memory dumps due to cleartext storage. This affects organizations using Infinera's Transcend Network Management System where TNMS Client desktop applications are deployed on shared or multi-user systems.
💻 Affected Systems
- Infinera Transcend Network Management System (TNMS) Client
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative credentials for TNMS, potentially compromising entire network management infrastructure, modifying configurations, disrupting services, or accessing sensitive network data.
Likely Case
Local attackers or malicious insiders with guest OS access steal user passwords, leading to unauthorized TNMS access, privilege escalation within the management system, and potential lateral movement.
If Mitigated
With proper access controls and memory protection, risk reduces to isolated credential theft requiring physical or administrative access to client machines.
🎯 Exploit Status
Exploitation requires local OS administrative privileges to dump process memory; tools like Process Explorer or debuggers can be used to extract cleartext passwords.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown - Check Infinera advisories
Vendor Advisory: Not provided in CVE reference
Restart Required: Yes
Instructions:
1. Contact Infinera support for patch availability. 2. Apply any available security updates to TNMS Client. 3. Restart TNMS Client applications after patching.
🔧 Temporary Workarounds
Restrict Local Administrative Access
allLimit guest OS administrator privileges on machines running TNMS Client to prevent memory dumping.
Use Group Policy (Windows) or sudoers (Linux) to restrict administrative access
Isolate TNMS Client Workstations
allDeploy TNMS Client on dedicated, single-user workstations with strict access controls.
🧯 If You Can't Patch
- Implement strict access controls: Only allow trusted users with necessary privileges to access TNMS Client machines.
- Monitor for suspicious memory dumping activities using endpoint detection tools and audit local administrative actions.
🔍 How to Verify
Check if Vulnerable:
Check TNMS Client version: If running 19.10.3, assume vulnerable. Test by running memory analysis tools (with proper authorization) to check for cleartext passwords in TNMS Client process memory.Check Version:
Check application version in TNMS Client interface or installation directory properties.Verify Fix Applied:
After patching, verify no cleartext passwords appear in TNMS Client memory dumps using the same testing method.📡 Detection & Monitoring
Log Indicators:
- Unusual process memory access events
- Multiple failed login attempts followed by successful logins from new locations
- Administrative actions from unexpected user accounts
Network Indicators:
- TNMS authentication from unexpected IP addresses
- Unusual management traffic patterns
SIEM Query:
ProcessName="TNMS Client" AND (EventID=4688 OR EventID=4104) AND CommandLine CONTAINS "procexp" OR "windbg" OR "gdb"