by Kastro
Paper/Archive/CVE-2023-23556

CVE-2023-23556

Facebook Hermes — An error in BigInt conversion to Number in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by a mali…

EPSS 0.9%CVSS 9.8
critical.is priorityof 100
41
CVSS 9.8 (NVD, ADP agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 59.4.594 × 2011.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Hermes< a6dcafe6ded8e61658b40f5699878cd19a481f80a6dcafe6ded8e61658b40f5699878cd19a481f80CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

reffacebook.com/security/advisories/cve-2023-23556refgithub.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80