CVE-2020-1913 : Security Advisory and Response

An Integer signedness error in the JavaScript Interpreter in Facebook Hermes prior to commit 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6 allows attackers to cause a denial of service attack or a potential RCE via crafted JavaScript. Most React Native applications are not affected.

Understanding CVE-2020-1913

Facebook Hermes contains a vulnerability that may lead to denial of service or Remote Code Execution (RCE) through manipulated JavaScript code.

What is CVE-2020-1913?

CVE-2020-1913 is an Integer signedness error found in the JavaScript Interpreter in Facebook Hermes before commit 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6.

The Impact of CVE-2020-1913

The vulnerability allows attackers to perform a denial of service attack or exploit potentially leading to Remote Code Execution (RCE).
Applications using Hermes and allowing execution of untrusted JavaScript may be at risk.

Technical Details of CVE-2020-1913

Facebook Hermes vulnerability details and affected systems.

Vulnerability Description

Integer signedness error in the JavaScript Interpreter of Facebook Hermes.

Affected Systems and Versions

Product: Hermes
Vendor: Facebook
Versions Affected: Commit prior to 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6

Exploitation Mechanism

Attackers exploit the vulnerability by using crafted JavaScript code, leading to denial of service or potential RCE.

Mitigation and Prevention

Protective measures against CVE-2020-1913.

Immediate Steps to Take

Apply patches and updates provided by Facebook promptly.
Restrict execution of untrusted JavaScript in applications using Hermes.

Long-Term Security Practices

Regularly monitor and update application dependencies for security patches.
Implement code review processes to identify and rectify vulnerable code segments.

Patching and Updates

Regularly check for security advisories and updates from Facebook regarding Hermes.