CVE-2019-17016
moderate-risk
Published 2020-01-08
When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in data exfiltration. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
Do I need to act?
~
3.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.1/10
Medium
NETWORK
/ LOW complexity
Affected Products (17)
References (50)
Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0085
Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0086
Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1599181
Mailing List
https://seclists.org/bugtraq/2020/Jan/12
Mailing List
https://seclists.org/bugtraq/2020/Jan/18
Third Party Advisory
https://usn.ubuntu.com/4234-1/
and 30 more references
49
/ 100
moderate-risk
Severity
23/34 · High
Exploitability
7/34 · Low
Exposure
19/34 · Moderate