CVE-2021-38498

high

Description

During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

References

https://www.mozilla.org/security/advisories/mfsa2021-43/

https://www.mozilla.org/security/advisories/mfsa2021-45/

https://bugzilla.mozilla.org/show_bug.cgi?id=1729642

https://www.mozilla.org/security/advisories/mfsa2021-47/

Details

Source: MITRE

Published: 2021-11-03

Updated: 2021-11-04

Type: CWE-416

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH