Bytecode Optimization Bug in Hermes Affecting React Native Applications
CVE-2023-28081

9.8CRITICAL

Key Information:

Vendor

Facebook

Status
Hermes
Vendor
CVE Published:
18 May 2023

What is CVE-2023-28081?

A vulnerability exists in Hermes, an open-source JavaScript engine, that stems from a bytecode optimization flaw. This issue could be exploited to trigger a use-after-free condition, potentially allowing an attacker to execute arbitrary code through a carefully crafted payload. However, this vulnerability presents risks primarily in environments where untrusted JavaScript is executed. Therefore, most React Native applications, which do not typically execute untrusted scripts, may remain unaffected. Taking proactive measures is essential for developers to secure their applications against such vulnerabilities.

Affected Version(s)

Hermes 0

References

https://www.facebook.com/security/advisories/cve-2023-28081
x_refsource_CONFIRM
https://github.com/facebook/hermes/commit/e6ed9c1a4b02dc2...
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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