CVE-2021-27201 Explained : Impact and Mitigation

Endian Firewall Community (aka EFW) 3.3.2 is vulnerable to a security issue that allows remote authenticated users to execute arbitrary OS commands through shell metacharacters in a backup comment.

Understanding CVE-2021-27201

This CVE entry pertains to a specific vulnerability identified in the Endian Firewall Community version 3.3.2.

What is CVE-2021-27201?

CVE-2021-27201 refers to the ability of remote authenticated users to run arbitrary OS commands using certain characters in a backup comment.

The Impact of CVE-2021-27201

This vulnerability may be exploited by malicious actors to execute unauthorized commands on affected systems, potentially leading to further compromise or unauthorized access.

Technical Details of CVE-2021-27201

In-depth technical information about the CVE-2021-27201 vulnerability.

Vulnerability Description

The vulnerability arises from improper input validation, allowing authenticated users to input malicious commands through shell metacharacters in a backup comment.

Affected Systems and Versions

Product: Endian Firewall Community (aka EFW)
Version: 3.3.2
Status: Affected

Exploitation Mechanism

The vulnerability can be exploited by authenticated users by inserting specific shell metacharacters in the backup comment field.

Mitigation and Prevention

Steps to mitigate the CVE-2021-27201 vulnerability and prevent potential exploitation.

Immediate Steps to Take

Upgrade to a patched version if available.
Implement restrictions on user input to prevent command injection.

Long-Term Security Practices

Regularly update and patch Endian Firewall Community to the latest version.
Educate users on safe input practices to avoid inadvertent command execution.

Patching and Updates

Refer to official sources for patches and updates to address CVE-2021-27201.