CVE-2025-48925
📋 TL;DR
TeleMessage service uses client-side MD5 hashing for authentication, allowing attackers to intercept or forge authentication credentials. This affects all TeleMessage users who rely on the TM SGNL app for secure messaging through at least May 5, 2025.
💻 Affected Systems
- TeleMessage service
- TM SGNL app
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, message interception, and impersonation of legitimate users in the TeleMessage ecosystem.
Likely Case
Unauthorized access to user accounts, message interception, and potential data leakage from compromised accounts.
If Mitigated
Limited impact if strong network controls prevent interception and additional authentication factors are required.
🎯 Exploit Status
Attack requires intercepting authentication traffic or forging MD5 hashes, which is trivial given MD5's known vulnerabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Contact TeleMessage for security updates and migrate to server-side authentication with modern hashing algorithms.
🔧 Temporary Workarounds
Disable TeleMessage Service
linuxCompletely disable TeleMessage service until a secure authentication mechanism is implemented.
systemctl stop telemessage
systemctl disable telemessage
Network Segmentation
allIsolate TeleMessage traffic to prevent interception and restrict access to trusted networks only.
🧯 If You Can't Patch
- Implement network monitoring to detect authentication hash interception attempts
- Require multi-factor authentication for all TeleMessage access
🔍 How to Verify
Check if Vulnerable:
Check if TeleMessage authentication uses client-side MD5 hashing by inspecting network traffic or app behavior.Check Version:
Check TeleMessage service version via admin interface or contact vendor.Verify Fix Applied:
Verify that authentication now uses server-side hashing with modern algorithms like SHA-256 or bcrypt.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts with forged MD5 hashes
- Unusual authentication patterns
Network Indicators:
- Intercepted MD5 authentication packets
- Unencrypted authentication traffic
SIEM Query:
source="telemessage" AND (event_type="auth" OR event_type="authentication") AND hash_algorithm="MD5"