Vulnerability in Mozilla Firefox
CVE-2019-17011
Under certain conditions, when retrieving a document from a DocShell in the antitracking code, a race condition could cause a use-after-free condition and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.015 (73.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Mozilla Firefox — versions before 71
- Mozilla Firefox Esr — versions before 68.3
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions before 68.3
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.10
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
References
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Issue Tracking, Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-36/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-38/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-37/ (Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.html (vendor-advisory, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4241-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2020:0292 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2020:0295 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202003-02 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-17011?
- CVE-2019-17011 is a high-severity vulnerability in Mozilla Firefox, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.5/10. Published 2020-01-08.
- How severe is CVE-2019-17011?
- High severity. CVSS v3 base score is 7.5 out of 10.