CVE-2020-10886 Explained : Impact and Mitigation
Learn about CVE-2020-10886 affecting TP-Link Archer A7 routers. Discover how remote attackers can execute arbitrary code without authentication and the necessary mitigation steps.
This vulnerability affects TP-Link Archer A7 routers, allowing remote attackers to execute arbitrary code without authentication. The flaw lies in the tmpServer service, enabling code execution via a user-supplied string.
Understanding CVE-2020-10886
This CVE identifies a critical security issue in TP-Link Archer A7 routers that can be exploited remotely to run unauthorized code.
What is CVE-2020-10886?
CVE-2020-10886 is a vulnerability in TP-Link Archer A7 routers that permits attackers to execute arbitrary code without needing authentication. The flaw is present in the tmpServer service on TCP port 20002.
The Impact of CVE-2020-10886
The vulnerability has a CVSS base score of 8.1, indicating a high severity level. Attackers can exploit this flaw to compromise confidentiality, integrity, and availability of affected systems.
Technical Details of CVE-2020-10886
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability allows remote attackers to execute arbitrary code on TP-Link Archer A7 routers without authentication. It stems from inadequate validation of user-supplied strings in the tmpServer service.
Affected Systems and Versions
- Product: TP-Link Archer A7
- Vendor: TP-Link
- Firmware Version: 190726
Exploitation Mechanism
The flaw in the tmpServer service on TCP port 20002 enables attackers to execute system calls with user-supplied strings, leading to unauthorized code execution.
Mitigation and Prevention
Protecting systems from CVE-2020-10886 requires immediate action and long-term security measures.
Immediate Steps to Take
- Disable remote management if not needed
- Implement network segmentation to limit exposure
- Monitor network traffic for suspicious activities
Long-Term Security Practices
- Regularly update firmware and security patches
- Conduct security assessments and penetration testing
- Educate users on safe browsing habits and phishing awareness
Patching and Updates
- Apply the latest firmware updates from TP-Link to address the vulnerability