CVE-2023-23556

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-23556
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-23556.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-23556
Published
2023-05-18T22:15:09Z
Modified
2025-10-16T09:30:19.903806Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/facebook/hermes

Affected ranges

Type
GIT
Repo
https://github.com/facebook/hermes
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a6dcafe6ded8e61658b40f5699878cd19a481f80

Affected versions

hermes-2022-04-28-RNv0.*

hermes-2022-04-28-RNv0.69.0-15d07c2edd29a4ea0b8f15ab0588a0c1adb1200f

hermes-2022-07-15-RNv0.*

hermes-2022-07-15-RNv0.70.0-88dd5731a19ab6b38b0a0a2d4386ba959f2a2c98

hermes-2022-11-03-RNv0.*

hermes-2022-11-03-RNv0.71.0-85613e1f9d1216f2cce7e54604be46057092939d

v0.*

v0.1.0
v0.1.1
v0.10.0
v0.11.0
v0.12.0
v0.2.1
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.7.0
v0.8.0
v0.9.0

Database specific

vanir_signatures

[
    {
        "digest": {
            "line_hashes": [
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                "157465235683486666630666541987617012353",
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                "305436130329384601449460512141132589680",
                "256784880773286649680719239257047737024"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "lib/VM/Operations.cpp"
        },
        "signature_type": "Line",
        "id": "CVE-2023-23556-145a8f24",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80"
    },
    {
        "digest": {
            "length": 281.0,
            "function_hash": "182465140115176206595651731294451484989"
        },
        "target": {
            "file": "lib/Support/BigIntSupport.cpp",
            "function": "toDouble"
        },
        "signature_type": "Function",
        "id": "CVE-2023-23556-1b1293fa",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80"
    },
    {
        "digest": {
            "line_hashes": [
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            ],
            "threshold": 0.9
        },
        "target": {
            "file": "lib/Support/BigIntSupport.cpp"
        },
        "signature_type": "Line",
        "id": "CVE-2023-23556-26f67e81",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80"
    },
    {
        "digest": {
            "line_hashes": [
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            ],
            "threshold": 0.9
        },
        "target": {
            "file": "lib/VM/JSLib/Array.cpp"
        },
        "signature_type": "Line",
        "id": "CVE-2023-23556-e833c902",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80"
    }
]