CVE-2020-15665

MEDIUM
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

Firefox did not reset the address bar after the beforeunload dialog was shown if the user chose to remain on the page. This could have resulted in an incorrect URL being shown when used in conjunction with other unexpected browser behaviors. This vulnerability affects Firefox < 80.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1651636

https://www.mozilla.org/security/advisories/mfsa2020-36/

Details

Source: MITRE

Published: 2020-10-01

Updated: 2020-10-13

Risk Information

CVSS v2

Base Score: 4.3

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

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 4.3

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

Impact Score: 1.4

Exploitability Score: 2.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

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

Tenable Plugins

View all (4 total)

IDNameProductFamilySeverity
140265Ubuntu 16.04 LTS / 18.04 LTS / 20.04 : Firefox regressions (USN-4474-2)NessusUbuntu Local Security Checks
high
139908Ubuntu 16.04 LTS / 18.04 LTS / 20.04 : Firefox vulnerabilities (USN-4474-1)NessusUbuntu Local Security Checks
high
139789Mozilla Firefox < 80.0NessusWindows
high
139788Mozilla Firefox < 80.0NessusMacOS X Local Security Checks
high