GHSA-6jg8-7333-554wCriticalCVSS 9.8Disclosed before NVD

Sandbox Breakout in realms-shim

Published
October 4, 2019
Last Modified
January 9, 2023

📋 Description

Versions of realms-shim prior to 1.2.0 are vulnerable to a Sandbox Breakout. Reflect.construct can be used on the sandboxed Function constructor to reach the prototypes of the primal Realm, which may allow an attacker to escape the sandbox and execute arbitrary code.

Recommendation

Upgrade to version 1.2.0 or later.

🎯 Affected products2

  • npm/realms-shim:< 1.2.0
  • npm/ses:< 0.6.3

🔗 References (8)