CVE-2023-40013 : Security Advisory and Response
Discover the details of CVE-2023-40013, an XSS vulnerability in SVG Loader javascript library, allowing attackers to execute scripts and potentially access sensitive data.
This article provides an in-depth analysis of CVE-2023-40013, which involves an improper neutralization of input during web page generation ('Cross-site Scripting') in external-svg-loader.
Understanding CVE-2023-40013
This CVE pertains to a vulnerability in the SVG Loader javascript library, allowing for a stored Cross-site Scripting (XSS) attack.
What is CVE-2023-40013?
SVG Loader is a javascript library that fetches SVGs using XMLHttpRequests, injecting the SVG code in place. Despite attempts to sanitize input, the logic is insufficient, enabling malicious SVGs to bypass security measures.
The Impact of CVE-2023-40013
This vulnerability could be exploited by attackers to execute arbitrary scripts in the context of a website using the external-svg-loader, potentially leading to unauthorized data access or manipulation.
Technical Details of CVE-2023-40013
The following details outline the vulnerability's specifics.
Vulnerability Description
While attempting to sanitize SVG files to prevent XSS, the library fails to thoroughly address all event attributes, opening the door for malicious script injections.
Affected Systems and Versions
The 'svg-loader' library versions prior to 1.6.9 are impacted by this vulnerability, providing attackers with the opportunity to perform stored XSS attacks.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting malicious SVG files with JavaScript code that can execute upon injection into vulnerable web pages.
Mitigation and Prevention
Preventive measures and solutions for CVE-2023-40013.
Immediate Steps to Take
Users are strongly advised to upgrade to version 1.6.9 or higher to mitigate the vulnerability. Ensure that all SVG files are thoroughly scanned and sanitized before usage.
Long-Term Security Practices
Implement strict content security policies (CSP) on websites, restrict user input privileges, and stay informed about security updates to protect against similar vulnerabilities.
Patching and Updates
Stay vigilant for new updates and patches released by the library maintainer, 'shubhamjain', to address security flaws and enhance the overall security posture.