CVE-2019-13276 Explained : Impact and Mitigation
Learn about CVE-2019-13276 affecting TRENDnet TEW-827DRU routers. Understand the stack-based buffer overflow issue, its impact, and mitigation steps to secure your device.
The TRENDnet TEW-827DRU with firmware up to version 2.04B03 is susceptible to a stack-based buffer overflow in the ssi binary, allowing unauthorized users to execute arbitrary code.
Understanding CVE-2019-13276
This CVE identifies a critical vulnerability in the TRENDnet TEW-827DRU router that can be exploited by attackers to run malicious code.
What is CVE-2019-13276?
The vulnerability in the ssi binary of the TRENDnet TEW-827DRU router's firmware up to version 2.04B03 enables unauthenticated users to execute any desired code by sending a long query string via a POST request to specific file types.
The Impact of CVE-2019-13276
The exploit allows attackers to execute arbitrary code either within the local intranet or remotely if remote administration is enabled on the device.
Technical Details of CVE-2019-13276
This section delves into the specifics of the vulnerability.
Vulnerability Description
The stack-based buffer overflow in the ssi binary of the TRENDnet TEW-827DRU router's firmware up to version 2.04B03 permits unauthorized code execution through specially crafted POST requests.
Affected Systems and Versions
- Product: TRENDnet TEW-827DRU
- Firmware Versions: Up to and including 2.04B03
Exploitation Mechanism
Attackers can exploit this vulnerability by sending a sufficiently long query string when making a POST request to cgi, txt, asp, or js files on the affected device.
Mitigation and Prevention
Protecting systems from CVE-2019-13276 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Disable remote administration if not required
- Implement network segmentation to limit access
- Monitor network traffic for suspicious activities
Long-Term Security Practices
- Regularly update firmware and security patches
- Conduct security audits and penetration testing
- Educate users on safe browsing habits
Patching and Updates
Ensure timely installation of firmware updates and security patches provided by TRENDnet to mitigate the vulnerability.