CVE-2021-27113 : Security Advisory and Response
Discover the impact of CVE-2021-27113, a critical vulnerability in D-Link DIR-816 A2 1.10 B05 devices leading to Command Injection via Shell Metacharacters. Learn about mitigation steps and prevention measures.
This article provides details about CVE-2021-27113, a vulnerability discovered in D-Link DIR-816 A2 1.10 B05 devices that could potentially lead to Command Injection via Shell Metacharacters.
Understanding CVE-2021-27113
This section covers the critical aspects of the CVE-2021-27113 vulnerability.
What is CVE-2021-27113?
CVE-2021-27113 is an issue found in D-Link DIR-816 A2 1.10 B05 devices where an HTTP request parameter is utilized in command string formation, allowing Command Injection via Shell Metacharacters.
The Impact of CVE-2021-27113
The vulnerability could be exploited by attackers to execute arbitrary commands on the affected device, potentially compromising its security and integrity.
Technical Details of CVE-2021-27113
In this section, the technical aspects of the CVE-2021-27113 vulnerability are discussed.
Vulnerability Description
A flaw in the handler function of the /goform/addRouting route in D-Link DIR-816 A2 1.10 B05 devices enables attackers to inject and execute malicious commands using HTTP request parameters.
Affected Systems and Versions
The vulnerability affects D-Link DIR-816 A2 devices running version 1.10 B05.
Exploitation Mechanism
Attackers can exploit this issue by crafting malicious HTTP requests containing specific parameters that trigger command injection via shell metacharacters.
Mitigation and Prevention
This section outlines the necessary steps to mitigate and prevent exploitation of CVE-2021-27113.
Immediate Steps to Take
Users are advised to update their D-Link DIR-816 A2 devices to the latest firmware version provided by the vendor. Additionally, restrict access to the device to trusted networks only.
Long-Term Security Practices
Enforce strong network segmentation, implement regular security audits, and educate users about the risks of opening untrusted links or files on the network.
Patching and Updates
Regularly check for security advisories from D-Link and apply patches and updates promptly to address known vulnerabilities.