CVE-2019-17020

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

If an XML file is served with a Content Security Policy and the XML file includes an XSL stylesheet, the Content Security Policy will not be applied to the contents of the XSL stylesheet. If the XSL sheet e.g. includes JavaScript, it would bypass any of the restrictions of the Content Security Policy applied to the XML document. This vulnerability affects Firefox < 72.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1597645

https://www.mozilla.org/security/advisories/mfsa2020-01/

https://usn.ubuntu.com/4234-1/

Details

Source: MITRE

Published: 2020-01-08

Updated: 2021-07-21

Type: CWE-20

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: 6.5

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

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM

Tenable Plugins

View all (3 total)

IDNameProductFamilySeverity
132854Ubuntu 16.04 LTS / 18.04 LTS / 19.04 / 19.10 : firefox vulnerabilities (USN-4234-1)NessusUbuntu Local Security Checks
high
132709Mozilla Firefox < 72.0 Multiple VulnerabilitiesNessusWindows
high
132708Mozilla Firefox < 72.0 Multiple VulnerabilitiesNessusMacOS X Local Security Checks
high