CVE-2023-30470 — CRITICAL (9.8)

Vulnerability Description

A use-after-free related to unsound inference in the bytecode generation when optimizations are enabled for Hermes prior to commit da8990f737ebb9d9810633502f65ed462b819c09 could have been used by an attacker to achieve remote code execution. 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 Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Facebook	Hermes	-

Related Weaknesses (CWE)

CWE-416

References

https://github.com/facebook/hermes/commit/da8990f737ebb9d9810633502f65ed462b819cPatch
https://www.facebook.com/security/advisories/cve-2023-30470PatchVendor Advisory
https://github.com/facebook/hermes/commit/da8990f737ebb9d9810633502f65ed462b819cPatch
https://www.facebook.com/security/advisories/cve-2023-30470PatchVendor Advisory

FAQ

What is CVE-2023-30470?

CVE-2023-30470 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A use-after-free related to unsound inference in the bytecode generation when optimizations are enabled for Hermes prior to commit da8990f737ebb9d9810633502f65ed462b819c09 could have been used by an a...

How severe is CVE-2023-30470?

CVE-2023-30470 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2023-30470?

Check the references section above for vendor advisories and patch information. Affected products include: Facebook Hermes.