CVE-2020-15684

critical
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

Mozilla developers reported memory safety bugs present in Firefox 81. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 82.

References

https://www.mozilla.org/security/advisories/mfsa2020-45/

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1653764%2C1661402%2C1662259%2C1664257

Details

Source: MITRE

Published: 2020-10-22

Updated: 2021-07-21

Risk Information

CVSS v2

Base Score: 7.5

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

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Tenable Plugins

View all (4 total)

IDNameProductFamilySeverity
141923Ubuntu 16.04 LTS : Firefox vulnerabilities (USN-4599-2)NessusUbuntu Local Security Checks
critical
141863Ubuntu 18.04 LTS / 20.04 LTS / 20.10 : Firefox vulnerabilities (USN-4599-1)NessusUbuntu Local Security Checks
critical
141572Mozilla Firefox < 82.0NessusMacOS X Local Security Checks
critical
141571Mozilla Firefox < 82.0NessusWindows
critical