FKIE_CVE-2023-23557

Vulnerability from fkie_nvd - Published: 2023-05-18 22:15 - Updated: 2025-01-21 22:15
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
cve-assign@fb.comhttps://github.com/facebook/hermes/commit/a00d237346894c6067a594983be6634f4168c9adPatch, Vendor Advisory
cve-assign@fb.comhttps://www.facebook.com/security/advisories/cve-2023-23557Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/facebook/hermes/commit/a00d237346894c6067a594983be6634f4168c9adPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.facebook.com/security/advisories/cve-2023-23557Patch, Vendor Advisory
Impacted products
Vendor Product Version
facebook hermes *
To clipboard 

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      "value": "An error in Hermes\u0027 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."
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  "id": "CVE-2023-23557",
  "lastModified": "2025-01-21T22:15:09.520",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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