CVE-2019-17011

HIGH

Firefox < 71.0 and Firefox ESR < 68.3 - Use-After-Free via DocShell Race Condition

Title source: llm
STIX 2.1

Description

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.

References (12)

Core 12
Core References
Exploit, Issue Tracking, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1591334
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-36/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-38/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-37/
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4241-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0292
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0295
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202003-02
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202003-10
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4335-1/

Scores

CVSS v3 7.5
EPSS 0.0133
EPSS Percentile 80.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-362
Status published
Products (7)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.10
mozilla/firefox < 71.0
mozilla/firefox_esr < 68.3
mozilla/thunderbird < 68.3
opensuse/leap 15.1
Published Jan 08, 2020
Tracked Since Feb 18, 2026