CVE-2019-11743

LOW

Firefox < 69 and Firefox ESR < 60.9, 68.1 - Cross-Origin Information Exposure via Navigation Timing Side-Channel

Title source: llm
STIX 2.1

Description

Navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload event, which restricts access to detailed timing attributes to only be same-origin. This resulted in potential cross-origin information exposure of history through timing side-channel attacks. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

References (13)

Core 13
Core References
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1560495
Exploit, Third Party Advisory x_refsource_misc
https://w3c.github.io/navigation-timing
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-25/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-27/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-26/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-29/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-30/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4150-1/
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201911-07

Scores

CVSS v3 3.7
EPSS 0.0099
EPSS Percentile 77.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Details

CWE
CWE-203
Status published
Products (3)
mozilla/firefox < 60.9.0
mozilla/firefox_esr 68.0 - 68.1.0
mozilla/thunderbird < 60.9.0
Published Sep 27, 2019
Tracked Since Feb 18, 2026