CVE-2019-20488 : Security Advisory and Response

A vulnerability has been identified in NETGEAR WNR1000V4 1.1.0.54 devices, allowing remote attackers to execute unauthorized commands through command injection in the web management interface.

Understanding CVE-2019-20488

This CVE involves a command injection vulnerability in NETGEAR WNR1000V4 1.1.0.54 devices, potentially leading to unauthorized command execution by attackers.

What is CVE-2019-20488?

The vulnerability exists in the web management interface (setup.cgi) of NETGEAR WNR1000V4 1.1.0.54 devices.
Attackers can exploit this flaw by injecting shell metacharacters in the sysDNSHost parameter.

The Impact of CVE-2019-20488

Remote attackers can execute arbitrary commands on affected devices.
Unauthorized access to sensitive information and system compromise are possible consequences.

Technical Details of CVE-2019-20488

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Command injection vulnerability in multiple functions of the web management interface.
Allows remote attackers to execute unauthorized commands.

Affected Systems and Versions

NETGEAR WNR1000V4 1.1.0.54 devices are affected by this vulnerability.

Exploitation Mechanism

Injection of shell metacharacters in the sysDNSHost parameter enables attackers to execute unauthorized commands.

Mitigation and Prevention

Protecting systems from CVE-2019-20488 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by NETGEAR to address the vulnerability.
Monitor network traffic for any suspicious activities.
Restrict access to the web management interface.

Long-Term Security Practices

Regularly update firmware and software to prevent known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Regularly check for security updates and patches from NETGEAR to mitigate the vulnerability.