Marc Horowitz

2 exploits Active since Sep 2020
CVE-2020-1911 WRITEUP CRITICAL WRITEUP
Facebook Hermes < 0.4.3 - Type Confusion
A type confusion vulnerability when resolving properties of JavaScript objects with specially-crafted prototype chains in Facebook Hermes prior to commit fe52854cdf6725c2eaa9e125995da76e6ceb27da allows attackers to potentially execute arbitrary code 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.
CVSS 9.8
CVE-2020-1915 WRITEUP HIGH WRITEUP
Facebook Hermes < 2020-09-25 - Out-of-Bounds Read
An out-of-bounds read in the JavaScript Interpreter in Facebook Hermes prior to commit 8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0 allows attackers to cause a denial of service attack or possible further memory corruption 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.
CVSS 7.5