CVE-2021-20161 Explained : Impact and Mitigation
Discover the details of CVE-2021-20161 affecting Trendnet AC2600 TEW-827DRU version 2.08B01. Learn about the impact, technical description, affected systems, exploitation method, and mitigation steps.
A vulnerability has been discovered in Trendnet AC2600 TEW-827DRU version 2.08B01 that exposes the device to unauthorized access through the UART port. This allows a malicious actor with physical access to gain root shell access without requiring any username or password.
Understanding CVE-2021-20161
This section provides insights into the nature and impact of CVE-2021-20161.
What is CVE-2021-20161?
The CVE-2021-20161 vulnerability affects Trendnet AC2600 TEW-827DRU version 2.08B01 by allowing unauthorized access through the UART port, granting full control of the device to attackers.
The Impact of CVE-2021-20161
The vulnerability enables malicious actors with physical access to exploit the UART functionality and gain root shell access, compromising the security and integrity of the device.
Technical Details of CVE-2021-20161
Explore the technical aspects of the CVE-2021-20161 vulnerability.
Vulnerability Description
Trendnet AC2600 TEW-827DRU version 2.08B01 lacks sufficient protections for its UART functionality, enabling unauthorized users to establish a serial connection without authentication, leading to complete device takeover.
Affected Systems and Versions
The specific version impacted by CVE-2021-20161 is Trendnet AC2600 TEW-827DRU version 2.08B01.
Exploitation Mechanism
Attackers can exploit the vulnerability by physically accessing the device and connecting to the UART port, where they gain root shell access without any login credentials.
Mitigation and Prevention
Discover effective measures to mitigate and prevent the exploitation of CVE-2021-20161.
Immediate Steps to Take
To address the vulnerability, it is recommended to restrict physical access to the device and monitor for any suspicious activities around the UART port.
Long-Term Security Practices
Implement a comprehensive security policy that includes regular security assessments, firmware updates, and security training to prevent unauthorized access.
Patching and Updates
Vendor-supplied patches and firmware updates should be applied promptly to ensure that the UART functionality is adequately secured against unauthorized access.