Unrated severityNVD Advisory· Published May 18, 2023· Updated Jan 31, 2025
CVE-2023-23556
CVE-2023-23556
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.
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Affected products
2- Facebook/Hermesv5Range: 0
Patches
Vulnerability mechanics
References
2- github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80mitrex_refsource_MISC
- www.facebook.com/security/advisories/cve-2023-23556mitrex_refsource_CONFIRM
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