CVE-2020-15669

MEDIUM

Description

When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1656957

https://www.mozilla.org/security/advisories/mfsa2020-37/

https://www.mozilla.org/security/advisories/mfsa2020-40/

Details

Source: MITRE

Published: 2020-10-01

Updated: 2020-10-02

Type: CWE-416

Risk Information

CVSS v2.0

Base Score: 6.8

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

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 8.8

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

Impact Score: 5.9

Exploitability Score: 2.8

Severity: HIGH