CVE-2022-21803 : Security Advisory and Response
Learn about CVE-2022-21803, a critical Prototype Pollution vulnerability in nconf package versions prior to 0.11.4. Understand the impact, technical details, and mitigation steps.
Prototype Pollution vulnerability in nconf package versions prior to 0.11.4 allows attackers to modify properties on the Object.prototype, leading to a high severity impact.
Understanding CVE-2022-21803
This CVE identifies a security issue in the nconf package, impacting versions below 0.11.4 due to a Prototype Pollution vulnerability.
What is CVE-2022-21803?
The vulnerability in this CVE allows for the modification of properties on the Object.prototype using a crafted property in the .set() function, affecting the nconf package.
The Impact of CVE-2022-21803
With a CVSS base score of 7.3 (High), the CVE poses a risk of allowing attackers to manipulate Object.prototype properties, potentially leading to malicious outcomes.
Technical Details of CVE-2022-21803
This section covers specific technical aspects of CVE-2022-21803.
Vulnerability Description
The vulnerability arises when the nconf package, specifically versions before 0.11.4, is used with the memory engine, enabling the storage of a nested JSON configuration representation vulnerable to Prototype Pollution.
Affected Systems and Versions
Systems using the nconf package with versions lower than 0.11.4 are vulnerable to this exploit.
Exploitation Mechanism
By leveraging a crafted property in the .set() function of the nconf package, attackers can exploit the vulnerability to alter properties on the Object.prototype.
Mitigation and Prevention
To address CVE-2022-21803, it is crucial to implement the following security measures.
Immediate Steps to Take
- Update nconf package to version 0.11.4 or above to mitigate the vulnerability.
- Monitor for any unauthorized changes to Object.prototype properties.
Long-Term Security Practices
- Regularly update dependencies to stay protected against known vulnerabilities.
- Conduct security audits to identify and remediate potential issues proactively.
Patching and Updates
Stay informed about security patches and updates released by the nconf package maintainers to apply necessary fixes promptly.