CVE-2023-23557

2023-05-1821:19:41

facebook

www.cve.org

hermes

object copying algorithm

remote code execution

untrusted javascript

react native applications

type confusion

0.004 Low

EPSS

Percentile

74.2%

JSON

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.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Hermes",
    "vendor": "Facebook",
    "versions": [
      {
        "lessThan": "a00d237346894c6067a594983be6634f4168c9ad",
        "status": "affected",
        "version": "0",
        "versionType": "git"
      }
    ]
  }
]