CVE-2020-1915
An out-of-bounds read in the JavaScript Interpreter in Facebook Hermes prior to commit 8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0 allows attackers to cause a denial of service attack or possible further memory corruption via crafted JavaScript.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An out-of-bounds read in the JavaScript Interpreter in Facebook Hermes prior to commit 8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0 allows attackers to cause a denial of service attack or possible further memory corruption 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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.60% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- facebook/hermes
- Source
- cve-assign@fb.com
References
- https://github.com/facebook/hermes/commit/8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0Patch, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2020-1915Vendor Advisory
- https://github.com/facebook/hermes/commit/8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0Patch, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2020-1915Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.