Vulnerability in Microsoft Windows
CVE-2019-17021
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.*. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
Vulnerability class: Race Condition
EPSS: 0.019 (77.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.
Affected products
- Microsoft Windows
- Mozilla Firefox — versions before 72
- Mozilla Firefox Esr — versions before 68.4
- Mozilla Firefox_esr
- Opensuse Leap — versions 15.1
Weakness classification (CWE)
References
- security@mozilla.org (Permissions Required, Exploit, x_refsource_MISC, Issue Tracking)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (mailing-list, x_refsource_BUGTRAQ, Mailing List, Third Party Advisory)
- security@mozilla.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- security@mozilla.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@mozilla.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2019-17021?
- CVE-2019-17021 is a medium-severity vulnerability in Microsoft Windows, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.3/10. Published 2020-01-08.
- How severe is CVE-2019-17021?
- Medium severity. CVSS v3 base score is 5.3 out of 10.