CVE-2020-29060
📋 TL;DR
This vulnerability involves CDATA networking devices having a default hardcoded password 'debug124' for the debug account, allowing attackers to gain unauthorized access. It affects multiple CDATA OLT (Optical Line Terminal) models listed in the CVE. Organizations using these devices are at risk of compromise.
💻 Affected Systems
- CDATA 72408A
- CDATA 9008A
- CDATA 9016A
- CDATA 92408A
- CDATA 92416A
- CDATA 9288
- CDATA 97016
- CDATA 97024P
- CDATA 97028P
- CDATA 97042P
- CDATA 97084P
- CDATA 97168P
- CDATA FD1002S
- CDATA FD1104
- CDATA FD1104B
- CDATA FD1104S
- CDATA FD1104SN
- CDATA FD1108S
- CDATA FD1204S-R2
- CDATA FD1204SN
- CDATA FD1204SN-R2
- CDATA FD1208S-R2
- CDATA FD1216S-R1
- CDATA FD1608GS
- CDATA FD1608SN
- CDATA FD1616GS
- CDATA FD1616SN
- CDATA FD8000
📦 What is this software?
9288 Firmware by Cdatatec
9288 Firmware by Cdatatec
9288 Firmware by Cdatatec
9288 Firmware by Cdatatec
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full administrative control over the device, enabling them to disrupt network services, intercept traffic, deploy malware, or use the device as a pivot point into the internal network.
Likely Case
Unauthorized access leading to configuration changes, service disruption, or data interception, especially if devices are internet-facing or in poorly segmented networks.
If Mitigated
Limited impact if devices are isolated in secure network segments with strict access controls and monitoring, though the vulnerability still exists.
🎯 Exploit Status
Exploitation requires network access to the device's management interface and knowledge of the default credentials, but is straightforward once access is gained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: Not provided in references
Restart Required: No
Instructions:
No official patch is mentioned. Contact CDATA for firmware updates or security advisories. In the meantime, apply workarounds such as changing the default password or disabling the debug account.
🔧 Temporary Workarounds
Change Default Debug Password
allChange the password for the debug account from 'debug124' to a strong, unique password.
Log into the device management interface, navigate to user/account settings, locate the debug account, and change its password.
Disable Debug Account
allDisable or remove the debug account if it is not required for operations.
Log into the device management interface, navigate to user/account settings, and disable or delete the debug account.
🧯 If You Can't Patch
- Isolate affected devices in a secure network segment with strict firewall rules to limit access.
- Implement network monitoring and intrusion detection to alert on unauthorized access attempts.
🔍 How to Verify
Check if Vulnerable:
Attempt to log into the device's management interface using username 'debug' and password 'debug124'. If successful, the device is vulnerable.Check Version:
Check the device firmware version via the management interface or CLI, but specific commands vary by model.Verify Fix Applied:
After applying workarounds, attempt to log in with the old credentials; access should be denied. Verify the new password works if changed.📡 Detection & Monitoring
Log Indicators:
- Failed or successful login attempts to the debug account
- Configuration changes from the debug account
Network Indicators:
- Unauthorized access to device management ports (e.g., SSH, Telnet, web interface)
- Traffic anomalies from the device
SIEM Query:
Example: 'source_ip=* AND (event_type=login_failure OR event_type=login_success) AND username=debug'