CVE-2023-23556

Published May 18, 2023

Last updated 24 days ago

CVSS critical 9.8

Overview

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.
Source: cve-assign@fb.com
NVD status: Modified

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

nvd@nist.gov: CWE-787

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:facebook:hermes:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "E0B18E12-1694-49FF-881C-4BC5A8C847D7",
            "versionEndExcluding": "2023-02-02"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References