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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.019 (78.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
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
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Exploit, Issue Tracking)
- www.mozilla.org/security/advisories/mfsa2020-01/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-02/ (Vendor Advisory)
- seclists.org/bugtraq/2020/Jan/18 (mailing-list, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/155912/Slackware-Security-Advisory-mozilla-thunde… (Exploit, VDB Entry, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00029.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00043.html (vendor-advisory, Mailing List, Third Party Advisory)
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.