CVE-2020-17367 : Vulnerability Insights and Analysis

Firejail through 0.9.62 does not honor the -- end-of-options indicator after the --output option, potentially leading to command injection.

Understanding CVE-2020-17367

This CVE identifies a vulnerability in Firejail that could be exploited for command injection.

What is CVE-2020-17367?

CVE-2020-17367 refers to a specific issue in Firejail versions up to 0.9.62, where the program fails to properly handle the -- end-of-options indicator after the --output option. This oversight could allow an attacker to inject and execute arbitrary commands.

The Impact of CVE-2020-17367

The vulnerability in Firejail could be exploited by malicious actors to execute unauthorized commands on the affected system, potentially leading to further compromise or unauthorized access.

Technical Details of CVE-2020-17367

Firejail through version 0.9.62 is susceptible to command injection due to improper handling of the -- end-of-options indicator.

Vulnerability Description

The vulnerability arises from the failure of Firejail to correctly interpret the -- end-of-options indicator after the --output option, enabling an attacker to inject and execute arbitrary commands.

Affected Systems and Versions

Product: Firejail
Vendor: N/A
Versions: Up to 0.9.62

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input that includes the --output option followed by the -- end-of-options indicator and the injected command, potentially leading to command execution.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks associated with CVE-2020-17367.

Immediate Steps to Take

Update Firejail to a patched version that addresses the vulnerability.
Avoid running Firejail with untrusted or unknown input to minimize the risk of exploitation.

Long-Term Security Practices

Regularly monitor for security advisories and updates related to Firejail.
Implement strong input validation mechanisms to prevent command injection vulnerabilities.

Patching and Updates

Apply the latest patches and updates provided by Firejail to ensure the security of the system and prevent exploitation of this vulnerability.