Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1nbXBtLXhwNDMtZjdnNs4AAl2T

Signed to Unsigned Conversion Error in Facebook Hermes

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. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.

Permalink: https://github.com/advisories/GHSA-gmpm-xp43-f7g6
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1nbXBtLXhwNDMtZjdnNs4AAl2T
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: almost 2 years ago
Updated: about 1 year ago

CVSS Score: 8.1
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-gmpm-xp43-f7g6, CVE-2020-1913
References:

• https://nvd.nist.gov/vuln/detail/CVE-2020-1913
• https://github.com/facebook/hermes/commit/2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6
• https://www.facebook.com/security/advisories/cve-2020-1913
• https://github.com/advisories/GHSA-gmpm-xp43-f7g6

Repository: https://github.com/facebook/hermes
Blast Radius: 43.2

Affected Packages