Vulnerability CVE-2019-17020


Published: 2020-01-08

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.

Type:

CWE-20

(Improper Input Validation)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Mozilla -> Firefox 
Canonical -> Ubuntu linux 

 References:
https://bugzilla.mozilla.org/show_bug.cgi?id=1597645
https://usn.ubuntu.com/4234-1/
https://www.mozilla.org/security/advisories/mfsa2020-01/

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