Vulnerability Description
A logic vulnerability when handling the SaveGeneratorLong instruction in Facebook Hermes prior to commit b2021df620824627f5a8c96615edbd1eb7fdddfc allows attackers to potentially read out of bounds or theoretically 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hermes | < 2020-10-01 |
Related Weaknesses (CWE)
References
- https://github.com/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddPatchThird Party Advisory
- https://www.facebook.com/security/advisories/cve-2020-1914Vendor Advisory
- https://github.com/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddPatchThird Party Advisory
- https://www.facebook.com/security/advisories/cve-2020-1914Vendor Advisory
FAQ
What is CVE-2020-1914?
CVE-2020-1914 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A logic vulnerability when handling the SaveGeneratorLong instruction in Facebook Hermes prior to commit b2021df620824627f5a8c96615edbd1eb7fdddfc allows attackers to potentially read out of bounds or ...
How severe is CVE-2020-1914?
CVE-2020-1914 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-1914?
Check the references section above for vendor advisories and patch information. Affected products include: Facebook Hermes.