Use-After-Free Vulnerability in Hermes Bytecode Generation
CVE-2023-30470

9.8CRITICAL

Key Information:

Vendor

Facebook

Status
Hermes
Vendor
CVE Published:
18 May 2023

What is CVE-2023-30470?

A use-after-free vulnerability exists in the Hermes bytecode generation process when optimizations are enabled. An attacker could exploit this flaw to potentially execute arbitrary code remotely. Note that this exploit is primarily relevant when Hermes processes untrusted JavaScript code, meaning that most React Native applications are typically not at risk.

Affected Version(s)

Hermes 0

References

https://www.facebook.com/security/advisories/cve-2023-30470
x_refsource_CONFIRM
https://github.com/facebook/hermes/commit/da8990f737ebb9d...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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