CVE-2021-29445 : What You Need to Know
Learn about CVE-2021-29445 affecting jose-node-esm-runtime npm package. Discover the impact, technical details, and mitigation strategies for the Observable Timing Discrepancy vulnerability.
A vulnerability labeled as CVE-2021-29445 has been identified in the jose-node-esm-runtime npm package, affecting versions prior to 3.11.4. This vulnerability could lead to a Padding Oracle Attack due to an Observable Timing Discrepancy. Read on to understand the impact, technical details, and mitigation strategies related to this CVE.
Understanding CVE-2021-29445
This section provides insights into the nature of the vulnerability and its implications.
What is CVE-2021-29445?
jose-node-esm-runtime is an npm package that offers various cryptographic functions. The vulnerability in versions earlier than 3.11.4 could potentially expose users to a Padding Oracle Attack due to observable timing differences in the decryption process.
The Impact of CVE-2021-29445
The vulnerability allows adversaries to exploit a padding oracle to decrypt data by leveraging timing differences during decryption without needing the decryption key, potentially compromising data confidentiality.
Technical Details of CVE-2021-29445
In this section, we delve deeper into the technical aspects of the CVE.
Vulnerability Description
The issue arises from a discrepancy in timing during padding error scenarios, allowing attackers to exploit the observable timing difference to perform a Padding Oracle Attack.
Affected Systems and Versions
The vulnerability affects jose-node-esm-runtime versions prior to 3.11.4.
Exploitation Mechanism
Adversaries can leverage the observable timing discrepancy to exploit a padding oracle and decrypt sensitive data.
Mitigation and Prevention
This section outlines steps to mitigate the risks associated with CVE-2021-29445.
Immediate Steps to Take
Users are advised to upgrade to version 3.11.4 or higher to prevent exploitation of the vulnerability.
Long-Term Security Practices
Implement robust security practices, such as regular software updates and code reviews, to enhance overall system security.
Patching and Updates
Stay informed about security patches and updates released by the jose-node-esm-runtime package maintainers to address known vulnerabilities.