CVE-2020-14074 : Exploit Details and Defense Strategies
Learn about CVE-2020-14074, a vulnerability in TRENDnet TEW-827DRU devices allowing code execution. Find mitigation steps and prevention measures here.
TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow vulnerability that allows an authenticated user to execute arbitrary code.
Understanding CVE-2020-14074
What is CVE-2020-14074?
The vulnerability in TRENDnet TEW-827DRU devices enables an authenticated user to trigger a stack-based buffer overflow by POSTing to apply.cgi via a specific action.
The Impact of CVE-2020-14074
The exploit allows attackers to execute arbitrary code on the affected device, potentially leading to unauthorized access and control.
Technical Details of CVE-2020-14074
Vulnerability Description
The vulnerability is a stack-based buffer overflow in the ssi binary of TRENDnet TEW-827DRU devices through version 2.06B04.
Affected Systems and Versions
- Product: TRENDnet TEW-827DRU
- Versions affected: Up to 2.06B04
Exploitation Mechanism
- Attackers can exploit the vulnerability by POSTing to apply.cgi using the action kick_ban_wifi_mac_allow with a long qcawifi.wifi0_vap0.maclist key.
Mitigation and Prevention
Immediate Steps to Take
- Disable remote access if not required
- Apply vendor-supplied patches promptly
Long-Term Security Practices
- Regularly update firmware and software
- Implement network segmentation and access controls
- Conduct security assessments and penetration testing
Patching and Updates
- Check for security advisories from TRENDnet
- Apply patches and updates as soon as they are available