VULNERABILITY INTELLIGENCE
CVE-2017-5402
CVSS score9.8 CRITICAL
EPSS probability2.90%
CISA KEVNot currently listed
Published2018-06-11
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
Weakness classification
- CWE-416: Use After Free
Primary references
- security@mozilla.org — Third Party Advisory
- security@mozilla.org — Third Party Advisory
- security@mozilla.org — Third Party Advisory
- security@mozilla.org — Third Party Advisory, VDB Entry
- security@mozilla.org — Third Party Advisory, VDB Entry
- security@mozilla.org — Issue Tracking, Patch, Vendor Advisory
- security@mozilla.org — Third Party Advisory
- security@mozilla.org — Third Party Advisory
- security@mozilla.org — Third Party Advisory
- security@mozilla.org — Third Party Advisory
- security@mozilla.org — Vendor Advisory
- security@mozilla.org — Vendor Advisory