CVE-2020-13976 Explained : Impact and Mitigation

An issue was discovered in DD-WRT through 16214 where the Diagnostic page allows remote attackers to execute arbitrary commands via shell metacharacters in the host field of the ping command. Exploitation through CSRF might be possible. The report is disputed by software maintainers due to referencing an old software version and requiring administrative privileges.

Understanding CVE-2020-13976

This CVE describes a vulnerability in DD-WRT that could potentially allow remote attackers to execute arbitrary commands.

What is CVE-2020-13976?

The vulnerability in DD-WRT through version 16214 enables attackers to run arbitrary commands through the ping command's host field, potentially leading to unauthorized access.

The Impact of CVE-2020-13976

The exploitation of this vulnerability could result in unauthorized command execution and potential security breaches, allowing attackers to gain control over the affected system.

Technical Details of CVE-2020-13976

This section provides more technical insights into the vulnerability.

Vulnerability Description

The issue in DD-WRT through 16214 allows remote attackers to execute arbitrary commands via shell metacharacters in the ping command's host field.

Affected Systems and Versions

Product: DD-WRT
Vendor: N/A
Versions affected: All versions through 16214

Exploitation Mechanism

Attackers exploit the vulnerability by injecting shell metacharacters in the host field of the ping command.
CSRF might be used for exploitation.

Mitigation and Prevention

Protecting systems from CVE-2020-13976 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update DD-WRT to the latest version to mitigate the vulnerability.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Implement strong access controls and least privilege principles.
Regularly audit and update software to address security flaws.

Patching and Updates

Apply patches and security updates promptly to address known vulnerabilities in DD-WRT.