CVE-2022-40138 Information

Description

An integer conversion error in Hermes bytecode generation prior to commit 6aa825e480d48127b480b08d13adf70033237097 could have been used to perform Out-Of-Bounds operations and subsequently execute arbitrary code. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence most React Native applications are not affected.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://www.facebook.com/security/advisories/CVE-2022-40138 https://github.com/facebook/hermes/commit/6aa825e480d48127b480b08d13adf70033237097

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8