CVE-2017-7816

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

WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security checks that disallow this behavior. This vulnerability affects Firefox < 56.

References

http://www.securityfocus.com/bid/101057

http://www.securitytracker.com/id/1039465

https://bugzilla.mozilla.org/show_bug.cgi?id=1380597

https://www.mozilla.org/security/advisories/mfsa2017-21/

Details

Source: MITRE

Published: 2018-06-11

Updated: 2019-10-03

Type: CWE-20

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 5.3

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

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to 55.0.3 (inclusive)

Tenable Plugins

View all (6 total)

IDNameProductFamilySeverity
700321Mozilla Firefox < 56 Multiple VulnerabilitiesNessus Network MonitorWeb Clients
high
103680Mozilla Firefox < 56 Multiple VulnerabilitiesNessusWindows
critical
103678Mozilla Firefox < 56 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
critical
103667Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : firefox regression (USN-3435-2)NessusUbuntu Local Security Checks
critical
103646Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : firefox vulnerabilities (USN-3435-1)NessusUbuntu Local Security Checks
critical
103556FreeBSD : mozilla -- multiple vulnerabilities (1098a15b-b0f6-42b7-b5c7-8a8646e8be07)NessusFreeBSD Local Security Checks
critical