CVE-2022-31108 : Security Advisory and Response
Discover details of CVE-2022-31108 affecting Mermaid.js. Learn about the impact, affected versions, and mitigation steps to address the CSS injection vulnerability.
A vulnerability has been identified in Mermaid.js, a JavaScript-based diagramming and charting tool. The issue allows an attacker to inject arbitrary CSS into the generated graph, potentially leading to information disclosure and unintended user actions. Here's what you need to know about CVE-2022-31108.
Understanding CVE-2022-31108
This section provides insights into the nature and implications of the vulnerability.
What is CVE-2022-31108?
CVE-2022-31108 is a security issue in Mermaid.js that enables attackers to manipulate the styling of elements outside the generated graph, potentially compromising sensitive data and inducing unintended user behaviors. The vulnerability arises from improper handling of CSS injection.
The Impact of CVE-2022-31108
The vulnerability's impact is rated as medium severity, with a CVSS base score of 4.1. It poses a threat to confidentiality, potentially allowing attackers to disclose sensitive information. The attack vector is through the network and requires user interaction.
Technical Details of CVE-2022-31108
Delve into the technical aspects and specifics of the vulnerability.
Vulnerability Description
Attackers exploit the vulnerability by injecting malicious CSS into the graph, affecting the container HTML. This allows them to alter styling properties and potentially exfiltrate sensitive data using crafted CSS selectors.
Affected Systems and Versions
The vulnerability affects Mermaid versions from 8.0.0 to 9.1.3. Users operating on these versions are susceptible to exploitation.
Exploitation Mechanism
By injecting CSS into the graph, attackers can manipulate the appearance of elements outside the graph, leading to potential information disclosure and user manipulation.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2022-31108.
Immediate Steps to Take
Users are strongly advised to update Mermaid to version 9.1.3 or later to mitigate the vulnerability. If upgrading is not feasible, ensure that user input is properly escaped before embedding it into CSS content.
Long-Term Security Practices
Incorporate secure coding practices and regularly update software to prevent similar vulnerabilities in the future.
Patching and Updates
Stay informed about security advisories and promptly apply patches and updates to eliminate known vulnerabilities.