CVE-2023-30470
A use-after-free related to unsound inference in the bytecode generation when optimizations are enabled for Hermes prior to commit da8990f737ebb9d9810633502f65ed462b819c09 could have been used by an attacker to achieve remote code execution.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A use-after-free related to unsound inference in the bytecode generation when optimizations are enabled for Hermes prior to commit da8990f737ebb9d9810633502f65ed462b819c09 could have been used by an attacker to achieve remote code execution. 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
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.25% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- facebook/hermes
- Source
- cve-assign@fb.com
References
- https://github.com/facebook/hermes/commit/da8990f737ebb9d9810633502f65ed462b819c09Patch
- https://www.facebook.com/security/advisories/cve-2023-30470Patch, Vendor Advisory
- https://github.com/facebook/hermes/commit/da8990f737ebb9d9810633502f65ed462b819c09Patch
- https://www.facebook.com/security/advisories/cve-2023-30470Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.