CVE-2023-23557

Published May 18, 2023

Last updated a year ago

CVSS critical 9.8

Overview

Description: An error in Hermes' algorithm for copying objects properties prior to commit a00d237346894c6067a594983be6634f4168c9ad could be used by a malicious attacker to execute arbitrary code via type confusion. Note that this 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-843

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:facebook:hermes:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "D3F86788-10E5-4DD4-99DA-865FDD9C7FD8",
            "versionEndExcluding": "2023-01-10"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References