CVEvulnerability
CVE-2023-23556
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2023-05-18
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-787
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.
Affected configurations
• facebook hermes (< 2023-02-02)
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80 Patch
- https://www.facebook.com/security/advisories/cve-2023-23556 Patch, Vendor Advisory
- https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80 Patch
- https://www.facebook.com/security/advisories/cve-2023-23556 Patch, Vendor Advisory