CVE-2019-17020

MEDIUM6.5

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

Published Jan 8, 2020

Modified 1 years ago

Details

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

WEB

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

ADVISORY

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

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2019-17020

WEB

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

CVSS Analysis

CVSS v3.1

6.5