CVE-2018-18497

MEDIUM

Description

Limitations on the URIs allowed to WebExtensions by the browser.windows.create API can be bypassed when a pipe in the URL field is used within the extension to load multiple pages as a single argument. This could allow a malicious WebExtension to open privileged about: or file: locations. This vulnerability affects Firefox < 64.

References

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

https://bugzilla.mozilla.org/show_bug.cgi?id=1488180

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-20

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