CVE-2022-21222 : Vulnerability Insights and Analysis
Learn about CVE-2022-21222, a vulnerability in css-what package before 2.1.3, enabling ReDoS attacks. Understand the impact, technical details, and mitigation steps.
A detailed analysis of the Regular Expression Denial of Service (ReDoS) vulnerability in the package css-what before version 2.1.3, its impact, technical details, and mitigation steps.
Understanding CVE-2022-21222
This section provides insights into the vulnerability, its impact, affected systems, and exploitation mechanisms.
What is CVE-2022-21222?
The package css-what before version 2.1.3 is vulnerable to Regular Expression Denial of Service (ReDoS) due to the usage of an insecure regular expression in the re_attr variable of index.js. This vulnerability can be exploited through the parse function.
The Impact of CVE-2022-21222
The exploitation of this vulnerability can lead to Denial of Service (DoS) attacks, potentially causing service unavailability and disruptions.
Technical Details of CVE-2022-21222
Explore the vulnerability description, affected systems, versions, and the exploitation mechanism.
Vulnerability Description
The vulnerability arises from the insecure regular expression used in the re_attr variable of index.js in the css-what package.
Affected Systems and Versions
Vendor: N/A Product: css-what Versions Affected: Less than 2.1.3
Exploitation Mechanism
The vulnerability can be exploited through the parse function, allowing attackers to trigger a Regular Expression Denial of Service (ReDoS) attack.
Mitigation and Prevention
Learn about immediate steps to take and long-term security practices to protect against CVE-2022-21222.
Immediate Steps to Take
- Update the css-what package to version 2.1.3 or later to mitigate the vulnerability.
- Monitor for any unusual patterns or activities that could indicate a DoS attack.
Long-Term Security Practices
- Regularly update software and dependencies to ensure known vulnerabilities are patched.
- Implement input validation to sanitize user inputs and avoid security risks.
Patching and Updates
Stay informed about security updates and patches released by the css-what package maintainers to address CVE-2022-21222.