CVE-2019-12313 : Security Advisory and Response

Shave before version 2.5.3 is vulnerable to XSS due to mishandling of output encoding during HTML element overwriting.

Understanding CVE-2019-12313

What is CVE-2019-12313?

XSS vulnerability exists in Shave versions prior to 2.5.3 because of the mishandling of output encoding during the overwrite of an HTML element.

The Impact of CVE-2019-12313

This vulnerability could allow attackers to execute malicious scripts in the context of a user's browser, potentially leading to various attacks such as session hijacking, defacement, or data theft.

Technical Details of CVE-2019-12313

Vulnerability Description

The issue arises from the incorrect handling of output encoding during the replacement of HTML elements, enabling malicious script injection.

Affected Systems and Versions

Product: Shave
Vendor: Dollar Shave Club
Versions Affected: All versions before 2.5.3

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting crafted scripts into the application, which are then executed in the context of unsuspecting users' browsers.

Mitigation and Prevention

Immediate Steps to Take

Update Shave to version 2.5.3 or later to mitigate the XSS vulnerability.
Implement input validation and output encoding to prevent script injection attacks.

Long-Term Security Practices

Regularly monitor and audit web applications for security vulnerabilities.
Educate developers on secure coding practices to prevent similar issues in the future.

Patching and Updates

Stay informed about security advisories and updates from Dollar Shave Club to address any new vulnerabilities promptly.