CVE-2018-18495

MEDIUM

Description

WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions. This vulnerability affects Firefox < 64.

References

http://www.securityfocus.com/bid/106167

https://bugzilla.mozilla.org/show_bug.cgi?id=1427585

https://usn.ubuntu.com/3844-1/

https://www.mozilla.org/security/advisories/mfsa2018-29/

Details

Source: MITRE

Published: 2019-02-28

Updated: 2019-03-01

Type: CWE-275

Risk Information

CVSS v2.0

Base Score: 4.3

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

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 6.5

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

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM