Vulnerability in Mozilla Firefox
CVE-2019-11743
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.
EPSS: 0.018 (76.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified, unspecified
- Mozilla Firefox_esr
- Mozilla Thunderbird — versions unspecified, unspecified
Weakness classification (CWE)
References
- security@mozilla.org (Permissions Required, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- security@mozilla.org (Exploit, Third Party Advisory, x_refsource_MISC)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2019-11743?
- CVE-2019-11743 is a low-severity vulnerability in Mozilla Firefox, classified under Observable Discrepancy. CVSS score: 3.7/10. Published 2019-09-27.
- How severe is CVE-2019-11743?
- Low severity. CVSS v3 base score is 3.7 out of 10.