Access of Resource Using Incompatible Type ('Type Confusion') Affecting facebook/hermes package, versions [0,]


Severity

Recommended
0.0
critical
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Not Defined
EPSS
0.44% (75th percentile)

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  • Snyk IDSNYK-UNMANAGED-FACEBOOKHERMES-5563630
  • published19 May 2023
  • disclosed19 May 2023
  • creditUnknown

Introduced: 19 May 2023

CVE-2023-23557  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

A fix was pushed into the master branch but not yet published.

Overview

Affected versions of this package are vulnerable to Access of Resource Using Incompatible Type ('Type Confusion') due to an error in Hermes' algorithm for copying objects properties prior which could be used by a malicious attacker to execute arbitrary code.

Note: This is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

CVSS Scores

version 3.1