When pasting a &lt;style&gt; tag from the clipboard into a rich text editor, the CSS sanitizer does not escape &lt; and &gt; characters. Because the resulting string is pasted directly into the text node of the element this does not result in a direct injection into the webpage; however, if a webpage subsequently copies the node's innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability. Two WYSIWYG editors were identified with this behavior, more may exist. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-2061-1 firefox-esr security update
Debian DLA Debian DLA DLA-2071-1 thunderbird security update
Debian DSA Debian DSA DSA-4600-1 firefox-esr security update
Debian DSA Debian DSA DSA-4603-1 thunderbird security update
EUVD EUVD EUVD-2019-7496 When pasting a &lt;style&gt; tag from the clipboard into a rich text editor, the CSS sanitizer does not escape &lt; and &gt; characters. Because the resulting string is pasted directly into the text node of the element this does not result in a direct injection into the webpage; however, if a webpage subsequently copies the node's innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability. Two WYSIWYG editors were identified with this behavior, more may exist. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
Ubuntu USN Ubuntu USN USN-4234-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-4241-1 Thunderbird vulnerabilities
Ubuntu USN Ubuntu USN USN-4335-1 Thunderbird vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-05T01:24:48.712Z

Reserved: 2019-09-30T00:00:00

Link: CVE-2019-17022

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-01-08T22:15:12.730

Modified: 2024-11-21T04:31:33.833

Link: CVE-2019-17022

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-01-07T00:00:00Z

Links: CVE-2019-17022 - Bugzilla

cve-icon OpenCVE Enrichment

No data.