CVE-2021-24044 Information

Description

By passing invalid javascript code where await and yield were called upon non-async and non-generator getter/setter functions Hermes would invoke generator functions and error out on invalid await/yield positions. This could result in segmentation fault as a consequence of type confusion error with a low chance of RCE. This issue affects Hermes versions prior to v0.10.0.

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-2021-24044

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