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CVE-2023-23556

CRITICAL

9.8

Description

An error in BigInt conversion to Number in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by a malicious attacker to execute arbitrary code due to an out-of-bound write. Note that this bug is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published5/18/2023

Last Modified1/31/2025

Sourcenvd

Honeypot Sightings0

Affected Products

facebook:hermes

Weaknesses (CWE)

CWE-787

References

https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80(cve-assign@fb.com)

https://www.facebook.com/security/advisories/cve-2023-23556(cve-assign@fb.com)

https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80(af854a3a-2127-422b-91ae-364da2661108)

https://www.facebook.com/security/advisories/cve-2023-23556(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.