CVE-2021-23341 Explained : Impact and Mitigation
Discover the impact of CVE-2021-23341, a vulnerability in prismjs before 1.23.0 exposing systems to Regular Expression Denial of Service (ReDoS) attacks. Learn how to mitigate and prevent this issue.
A detailed overview of CVE-2021-23341, a vulnerability in the package prismjs before version 1.23.0 that exposes systems to Regular Expression Denial of Service (ReDoS) attacks.
Understanding CVE-2021-23341
This section provides insights into the impact, technical details, and mitigation strategies for CVE-2021-23341.
What is CVE-2021-23341?
The package prismjs before version 1.23.0 is susceptible to ReDoS attacks through specific components like prism-asciidoc, prism-rest, prism-tap, and prism-eiffel.
The Impact of CVE-2021-23341
With a CVSS base score of 7.5, this vulnerability has a high severity level, posing a risk of Regular Expression Denial of Service (ReDoS) with significant availability impact.
Technical Details of CVE-2021-23341
Explore the specifics of the vulnerability, affected systems, and how attackers can exploit the issue.
Vulnerability Description
The vulnerability arises due to improper handling of regular expressions in specific prismjs components, paving the way for ReDoS attacks.
Affected Systems and Versions
Systems using prismjs versions earlier than 1.23.0 are vulnerable to this exploit, especially if they utilize prism-asciidoc, prism-rest, prism-tap, or prism-eiffel components.
Exploitation Mechanism
Attackers can leverage this vulnerability to launch ReDoS attacks by crafting malicious inputs that trigger excessive matching complexities in affected components.
Mitigation and Prevention
Discover immediate steps to secure your systems and maintain long-term security practices against CVE-2021-23341.
Immediate Steps to Take
Update prismjs to version 1.23.0 or above to mitigate the vulnerability. Additionally, monitor for any suspicious activities related to ReDoS exploitation.
Long-Term Security Practices
Regularly update dependencies, conduct security audits, and educate developers on secure coding practices to prevent future vulnerabilities.
Patching and Updates
Stay informed about patch releases and security updates from prismjs to address known vulnerabilities promptly.