CVE-2019-20798 : Security Advisory and Response

A vulnerability related to cross-site scripting (XSS) has been found in Cherokee versions up to 1.2.104, allowing attackers to execute arbitrary commands.

Understanding CVE-2019-20798

This CVE involves an XSS flaw in Cherokee's handler_server_info.c up to version 1.2.104, enabling attackers to manipulate server configurations.

What is CVE-2019-20798?

Cherokee web server versions up to 1.2.104 are susceptible to a cross-site scripting (XSS) vulnerability. The flaw resides in handler_server_info.c, where the About page fails to display the requested URL correctly. Exploiting this XSS issue in the administrator panel grants attackers the ability to modify server settings and run arbitrary commands.

The Impact of CVE-2019-20798

The vulnerability allows malicious actors to compromise the integrity and security of Cherokee web servers, potentially leading to unauthorized access and data breaches.

Technical Details of CVE-2019-20798

This section provides in-depth technical insights into the vulnerability.

Vulnerability Description

The XSS vulnerability in Cherokee versions up to 1.2.104 stems from improper URL display on the About page, facilitating unauthorized server reconfiguration and command execution.

Affected Systems and Versions

Affected Version: Cherokee versions up to 1.2.104

Exploitation Mechanism

Attackers can exploit the XSS flaw in the administrator panel to manipulate server configurations and execute arbitrary commands.

Mitigation and Prevention

Protecting systems from CVE-2019-20798 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update Cherokee to version 1.2.104 or later to mitigate the XSS vulnerability.
Implement strict input validation to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor and audit server configurations for unauthorized changes.
Educate administrators and users on safe browsing practices to prevent XSS exploits.

Patching and Updates

Apply security patches promptly to address known vulnerabilities and enhance system security.