A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2019-02-05T21:00:00

Updated: 2024-08-05T11:08:21.883Z

Reserved: 2018-10-19T00:00:00

Link: CVE-2018-18500

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-02-05T21:29:00.330

Modified: 2019-04-02T07:29:06.163

Link: CVE-2018-18500

cve-icon Redhat

Severity : Critical

Publid Date: 2019-01-29T00:00:00Z

Links: CVE-2018-18500 - Bugzilla