CVE-2023-23557

CVSS 9.8 CRITICALEPSS 0.9%CWE-843

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.8EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

18 May 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Facebook · Hermes

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References

https://github.com/facebook/hermes/commit/a00d237346894c6067a594983be6634f4168c9ad https://www.facebook.com/security/advisories/cve-2023-23557