CVE-2023-53983
📋 TL;DR
CVE-2023-53983 allows attackers to gain full administrative control of Anevia Flamingo XL/XS devices by exploiting weak default credentials. This affects all systems running vulnerable versions with default configurations. Attackers can completely compromise affected systems without needing to bypass authentication mechanisms.
💻 Affected Systems
- Anevia Flamingo XL
- Anevia Flamingo XS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover allowing installation of malware, data exfiltration, lateral movement within networks, and persistent backdoor access.
Likely Case
Unauthorized administrative access leading to configuration changes, service disruption, and potential credential harvesting from the compromised system.
If Mitigated
Limited impact if credentials were changed during initial setup, though systems remain vulnerable to credential guessing attacks.
🎯 Exploit Status
Exploitation requires only knowledge of default credentials, which are publicly documented. Automated tools can easily scan for and exploit this vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.ateme.com/
Restart Required: No
Instructions:
1. Contact Anevia/ATEME for updated firmware. 2. Apply any available patches. 3. Verify credentials have been changed post-patch.
🔧 Temporary Workarounds
Change Default Credentials
allImmediately change all default administrative passwords to strong, unique credentials.
Use device administration interface to change passwords
Network Segmentation
allIsolate Flamingo devices from internet and restrict network access to necessary services only.
Configure firewall rules to limit inbound/outbound connections
🧯 If You Can't Patch
- Change all default credentials immediately using strong, unique passwords
- Implement network segmentation and firewall rules to restrict access to management interfaces
🔍 How to Verify
Check if Vulnerable:
Attempt to authenticate to the administrative interface using known default credentials (check public sources for specific credentials).Check Version:
Check device web interface or console for firmware version informationVerify Fix Applied:
Verify that default credentials no longer work and only strong, unique credentials provide access.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful login
- Authentication from unexpected IP addresses
- Configuration changes from unknown users
Network Indicators:
- Unauthorized access to administrative ports (typically HTTP/HTTPS management interfaces)
- Traffic patterns indicating credential guessing
SIEM Query:
source="flamingo" AND (event_type="authentication" AND result="success") AND user="admin" OR user contains "default"🔗 References
- https://cxsecurity.com/issue/WLB-2023060019
- https://exchange.xforce.ibmcloud.com/vulnerabilities/259059
- https://packetstormsecurity.com/files/172875/Anevia-Flamingo-XL-XS-3.6.x-Default-Hardcoded-Credentials.html
- https://www.ateme.com/
- https://www.vulncheck.com/advisories/anevia-flamingo-xlxs-default-credentials-authentication-bypass
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5777.php
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5777.php
