CVE-2023-24833

CVSS 7.5 HIGHEPSS 0.6%

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.5EPSS 0.6%KEV nãoPoC —Patch —

Lifecycle

18 May 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A use-after-free in BigIntPrimitive addition in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by an attacker to leak raw data from Hermes VM’s heap. 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:N/A:N

Affected products

Facebook · Hermes

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References

https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80 https://www.facebook.com/security/advisories/cve-2023-24833