CVE-2020-24897 : Vulnerability Insights and Analysis
Learn about CVE-2020-24897, a high-severity vulnerability in Table Filter and Charts for Confluence Server app allowing remote attackers to execute XSS attacks. Find mitigation steps and prevention measures.
The Table Filter and Charts for Confluence Server app before 5.3.25 (for Atlassian Confluence) allow remote attackers to inject arbitrary HTML or JavaScript via cross-site scripting (XSS) through the provided Markdown markup to the "Table from CSV" macro.
Understanding CVE-2020-24897
This CVE involves a vulnerability in the Table Filter and Charts for Confluence Server app that could be exploited by attackers to execute XSS attacks.
What is CVE-2020-24897?
The CVE-2020-24897 vulnerability allows remote attackers to inject malicious HTML or JavaScript code through the Table from CSV macro in the affected Confluence Server app.
The Impact of CVE-2020-24897
The impact of this vulnerability is rated as HIGH, with a CVSS base score of 8.9. It can lead to unauthorized access, data manipulation, and potential compromise of sensitive information.
Technical Details of CVE-2020-24897
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability in the Table Filter and Charts for Confluence Server app allows for the injection of arbitrary HTML or JavaScript code through the Markdown markup, specifically in the "Table from CSV" macro.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: Required
- Scope: Changed
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: Low
Mitigation and Prevention
Protecting systems from CVE-2020-24897 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update the Table Filter and Charts for Confluence Server app to version 5.3.25 or higher.
- Avoid using the vulnerable macro until the app is patched.
- Educate users about the risks of executing untrusted macros.
Long-Term Security Practices
- Regularly monitor and update all installed apps and plugins.
- Implement content security policies to mitigate XSS risks.
- Conduct security training for users on identifying and reporting suspicious activities.
Patching and Updates
- Apply patches and updates provided by the app vendor promptly.