Improper input validation in Mozilla Firefox

CVE-2018-12367

In the previous mitigations for Spectre, the resolution or precision of various methods was reduced to counteract the ability to measure precise time intervals. In that work PerformanceNavigationTiming was not adjusted but it was found that it could be used as a precision timer. This vulnerability affects Thunderbird < 60, Firefox ESR < 60.1, and Firefox < 61.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.020 (78.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-12367?
CVE-2018-12367 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2018-10-18.
How severe is CVE-2018-12367?
Medium severity. CVSS v3 base score is 4.3 out of 10.