CVE-2017-15646 Explained : Impact and Mitigation

Webmin before version 1.860 is susceptible to a cross-site scripting (XSS) vulnerability that can lead to remote code execution.

Understanding CVE-2017-15646

This CVE involves a security flaw in Webmin that allows attackers to execute remote code through a crafted XSS payload.

What is CVE-2017-15646?

The vulnerability exists in the 'Download from remote URL' option under the 'Others/File Manager' menu in Webmin.
Attackers can exploit this by injecting an OS command into the input element, leading to remote code execution.

The Impact of CVE-2017-15646

Remote code execution can occur due to the XSS vulnerability in Webmin versions prior to 1.860.
An attacker can set up a malicious server to send an XSS payload, enabling them to execute remote code.

Technical Details of CVE-2017-15646

Webmin's vulnerability and its exploitation details.

Vulnerability Description

XSS vulnerability in Webmin versions before 1.860 allows remote code execution.
Attackers can inject OS commands into input elements to execute malicious code.

Affected Systems and Versions

Webmin versions prior to 1.860 are affected by this vulnerability.

Exploitation Mechanism

Attackers exploit the 'Download from remote URL' option to inject malicious code for remote code execution.

Mitigation and Prevention

Protective measures against CVE-2017-15646.

Immediate Steps to Take

Update Webmin to version 1.860 or newer to mitigate the vulnerability.
Regularly monitor for security advisories and patches from Webmin.

Long-Term Security Practices

Implement input validation to prevent XSS attacks.
Conduct regular security audits and penetration testing to identify vulnerabilities.

Patching and Updates

Apply security patches promptly to address known vulnerabilities in Webmin.