CVE-2021-23997

high

Description

Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 88.

References

https://www.mozilla.org/security/advisories/mfsa2021-16/

https://bugzilla.mozilla.org/show_bug.cgi?id=1701942

Details

Source: Mitre, NVD

Published: 2021-06-24

Updated: 2021-07-02

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High