CVE-2023-39619: Inefficient Regular Expression Complexity in node-email-check
Summary
CVE-2023-39619: Inefficient Regular Expression Complexity in node-email-check. Affects node-email-check versions < 1.0.4. No fix is published. How to fix ↓
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Background
The node-email-check package is an npm package used for email validation in Node.js applications. It provides functions to check the syntax and existence of an email address. The package is widely used in various Node.js projects to validate user input and ensure the correctness of email addresses. However, a vulnerability has been discovered in version 1.0.4 of the package, which allows an attacker to cause a denial of service (DoS) by exploiting inefficient regular expression complexity in the scpSyntax component.
Vulnerability Detail
The vulnerability in node-email-check arises from inefficient regular expression complexity. An attacker can exploit this vulnerability by providing a crafted string to the scpSyntax component, leading to excessive backtracking and causing a DoS. This can result in the unavailability of the affected application or service, impacting its functionality and potentially disrupting the user experience. The vulnerability has been assigned a CVSS score of 7.5, indicating a high severity level.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the recommended fix by upgrading to a non-vulnerable version of the node-email-check package.
Conclusion
In conclusion, the node-email-check package is vulnerable to an inefficient regular expression complexity issue, which can be exploited by an attacker to cause a denial of service. It is crucial for developers to promptly upgrade to a non-vulnerable version of the package to mitigate the risk. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
Node-email-check is an npm package used for email validation in Node.js applications. It provides functions to check the syntax and existence of an email address.
The vulnerability allows an attacker to cause a denial of service (DoS) by exploiting inefficient regular expression complexity. This can result in the unavailability of the affected application or service, impacting its functionality and potentially disrupting the user experience.
The CVSS score of this vulnerability is 7.5, indicating a high severity level.
To fix the vulnerability, it is recommended to upgrade the node-email-check package to a version that is not affected by the issue. Versions 1.0.5 and above have addressed the vulnerability.
There is no known workaround for this vulnerability. It is essential to apply the recommended fix by upgrading to a non-vulnerable version of the node-email-check package.
