CVE-2019-15053 : Security Advisory and Response
Discover the security vulnerability in the "HTML Include and replace macro" plugin for Confluence Server allowing XSS attacks. Learn about the impact, exploitation, and mitigation steps.
This CVE-2019-15053 article provides insights into a vulnerability in the "HTML Include and replace macro" plugin for Confluence Server that allows bypassing protection against XSS attacks.
Understanding CVE-2019-15053
This CVE involves a security vulnerability in a specific Confluence Server plugin that can be exploited to bypass XSS protection mechanisms.
What is CVE-2019-15053?
The plugin called "HTML Include and replace macro" version prior to 1.5.0 for Confluence Server has a vulnerability that allows bypassing the includeScripts=false protection against XSS attacks. This vulnerability can be exploited through the use of IFRAME elements.
The Impact of CVE-2019-15053
The vulnerability in the plugin can lead to potential XSS attacks, compromising the security of Confluence Server instances.
Technical Details of CVE-2019-15053
This section delves into the technical aspects of the CVE.
Vulnerability Description
The "HTML Include and replace macro" plugin before version 1.5.0 for Confluence Server allows a bypass of the includeScripts=false XSS protection mechanism via vectors involving an IFRAME element.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by utilizing IFRAME elements to bypass the XSS protection mechanism.
Mitigation and Prevention
Protecting systems from CVE-2019-15053 is crucial to maintaining security.
Immediate Steps to Take
- Update the plugin to version 1.5.0 or newer to mitigate the vulnerability.
- Monitor for any suspicious activities that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update all plugins and software to the latest versions to prevent vulnerabilities.
- Implement strict content security policies to mitigate XSS risks.
Patching and Updates
- Stay informed about security updates for Confluence Server and its plugins.
- Apply patches promptly to address known vulnerabilities.