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    Dashboard / CVE / CVE-2023-23556

    CVE-2023-23556

    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.

    Published:May 18, 2023
    Last Modified:Jan 31, 2025
    EPS:May 18, 2023
    EPSS Score:0.00408
    CVSS Score:9.8

    Affected Products

    Vendor
    Facebook
    Product
    Hermes

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2023-30470 (CVSS 9.8) — A use-after-free related to unsound inference in the bytecode generation when optimizations are enabled for He…
    CVE-2023-28081 (CVSS 9.8) — A bytecode optimization bug in Hermes prior to commit e6ed9c1a4b02dc219de1648f44cd808a56171b81 could be used t…
    CVE-2023-25933 (CVSS 9.8) — A type confusion bug in TypedArray prior to commit e6ed9c1a4b02dc219de1648f44cd808a56171b81 could have been us…
    CVE-2023-24833 (CVSS 7.5) — A use-after-free in BigIntPrimitive addition in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f8…
    CVE-2023-24832 (CVSS 7.5) — A null pointer dereference bug in Hermes prior to commit 5cae9f72975cf0e5a62b27fdd8b01f103e198708 could have b…
    CVE-2023-23557 (CVSS 9.8) — An error in Hermes' algorithm for copying objects properties prior to commit a00d237346894c6067a594983be6634f4…
    CVE-2022-40138 (CVSS 9.8) — An integer conversion error in Hermes bytecode generation, prior to commit 6aa825e480d48127b480b08d13adf700332…
    CVE-2022-35289 (CVSS 9.8) — A write-what-where condition in hermes caused by an integer overflow, prior to commit 5b6255ae049fa4641791e47f…
    CVE-2022-32234 (CVSS 9.8) — An out of bounds write in hermes, while handling large arrays, prior to commit 06eaec767e376bfdb883d912cb15e98…
    CVE-2022-27810 (CVSS 7.5) — It was possible to trigger an infinite recursion condition in the error handler when Hermes executed specific …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High