Buffer overflow in Facebook Hermes
CVE-2022-32234
An out of bounds write in hermes, while handling large arrays, prior to commit 06eaec767e376bfdb883d912cb15e987ddf2bda1 allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.012 · change: +0.002
Affected products
- Facebook Hermes — versions unspecified
Weakness classification (CWE)
References
- github.com/facebook/hermes/commit/06eaec767e376bfdb883d912cb15e987ddf2bda1 (Patch, Third Party Advisory)
- www.facebook.com/security/advisories/CVE-2022-32234 (Vendor Advisory)
Frequently asked questions
- What is CVE-2022-32234?
- CVE-2022-32234 is a critical-severity vulnerability in Facebook Hermes, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-10-11.
- How severe is CVE-2022-32234?
- Critical severity. CVSS v3 base score is 9.8 out of 10.