CVE-2023-23556

CVSS 9.8 CRITICALEPSS 0.9%

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 BigInt conversion to Number in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by a malicious attacker to execute arbitrary code due to an out-of-bound write. Note that this bug 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

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80 https://www.facebook.com/security/advisories/cve-2023-23556