CVE-2018-20057 : Vulnerability Insights and Analysis

A vulnerability has been found in /bin/boa on D-Link DIR-619L Rev.B 2.06B1 and DIR-605L Rev.B 2.12B1 devices, allowing remote authenticated users to execute arbitrary commands in the operating system.

Understanding CVE-2018-20057

This CVE identifies a security flaw in D-Link routers that enables unauthorized command execution.

What is CVE-2018-20057?

The vulnerability in goform/formSysCmd on specific D-Link router models permits authenticated remote users to run arbitrary commands through the sysCmd POST parameter.

The Impact of CVE-2018-20057

This vulnerability poses a significant risk as attackers can exploit it to execute unauthorized commands on affected devices, potentially leading to system compromise.

Technical Details of CVE-2018-20057

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The issue lies in /bin/boa on D-Link DIR-619L Rev.B 2.06B1 and DIR-605L Rev.B 2.12B1 devices, specifically in the goform/formSysCmd function, allowing for the execution of arbitrary OS commands.

Affected Systems and Versions

D-Link DIR-619L Rev.B 2.06B1
D-Link DIR-605L Rev.B 2.12B1

Exploitation Mechanism

The vulnerability can be exploited by authenticated remote users sending malicious commands via the sysCmd POST parameter.

Mitigation and Prevention

Protecting systems from CVE-2018-20057 requires immediate action and long-term security measures.

Immediate Steps to Take

Apply vendor-supplied patches promptly to mitigate the vulnerability.
Restrict access to vulnerable devices to authorized users only.

Long-Term Security Practices

Regularly update firmware and software to address security flaws.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Regularly check for security updates from D-Link and apply patches to address known vulnerabilities.