During the initialization of a new content process, a race condition occurs that can allow a content process to disclose heap addresses from the parent process. *Note: this issue only occurs on Windows. Other operating systems are unaffected.* External Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2020-02/#CVE-2019-17021
Acknowledgments: Name: the Mozilla project Upstream: Thomas Imbert