CVE-2025-69205
📋 TL;DR
This vulnerability in Micro Registration Utility (µURU) allows attackers to inject malicious characters into the Dial() application by crafting special federation names. This enables call redirection on both federating instances, though exploitation requires admin acceptance of federation requests. Systems running µURU up to commit 88db9a953f38a3026bcd6816d51c7f3b93c55893 are affected.
💻 Affected Systems
- Micro Registration Utility (µURU)
⚠️ 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
Complete call interception and redirection across federated systems, potentially enabling eavesdropping, toll fraud, or denial of service.
Likely Case
Limited call manipulation if attacker can convince admin to accept malicious federation request, resulting in some call redirection.
If Mitigated
No impact if proper input validation is implemented or federation requests are carefully vetted.
🎯 Exploit Status
Exploitation requires social engineering to get admin to accept malicious federation request, plus knowledge of Asterisk Dial() injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None available as of publication
Vendor Advisory: https://github.com/olell/uURU/security/advisories/GHSA-xvrh-pm3f-79v4
Restart Required: Yes
Instructions:
No official patch available. Monitor GitHub repository for updates and apply when released.
🔧 Temporary Workarounds
Disable Federation
allTemporarily disable federation functionality in µURU to prevent exploitation.
# Edit µURU configuration to disable federation features
# Consult µURU documentation for specific configuration options
Input Validation Enhancement
allImplement custom input validation for federation names to reject special characters used in Asterisk Dial() injection.
# Add input sanitization in µURU source code for federation name fields
# Reject characters like $, {, }, |, &, ;, and other Asterisk special characters
🧯 If You Can't Patch
- Implement strict approval process for all federation requests with manual verification
- Monitor call logs for unusual redirection patterns and implement alerting
🔍 How to Verify
Check if Vulnerable:
Check µURU version against commit hash 88db9a953f38a3026bcd6816d51c7f3b93c55893 or earlier.Check Version:
git log --oneline -1 # Run in µURU installation directoryVerify Fix Applied:
When patch becomes available, verify federation name input properly rejects special characters used in Asterisk Dial() injection.📡 Detection & Monitoring
Log Indicators:
- Unusual federation requests with special characters
- Unexpected call redirections in Asterisk logs
- Failed Dial() commands with injection attempts
Network Indicators:
- Unexpected SIP call routing patterns
- Calls being redirected to unfamiliar endpoints
SIEM Query:
source="asterisk" AND ("Dial injection" OR "failed Dial" OR "malformed federation")