Detections
Analytics
CVE-2019-17022
medium
Description
When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape < and > 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.
References
https://www.mozilla.org/security/advisories/mfsa2020-02/
https://www.mozilla.org/security/advisories/mfsa2020-01/
https://www.debian.org/security/2020/dsa-4603
https://www.debian.org/security/2020/dsa-4600
https://usn.ubuntu.com/4335-1/
https://usn.ubuntu.com/4241-1/
https://usn.ubuntu.com/4234-1/
https://security.gentoo.org/glsa/202003-02
https://seclists.org/bugtraq/2020/Jan/26
https://seclists.org/bugtraq/2020/Jan/18
https://seclists.org/bugtraq/2020/Jan/12
https://lists.debian.org/debian-lts-announce/2020/01/msg00016.html
https://lists.debian.org/debian-lts-announce/2020/01/msg00005.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1602843
https://access.redhat.com/errata/RHSA-2020:0295
https://access.redhat.com/errata/RHSA-2020:0292
https://access.redhat.com/errata/RHSA-2020:0127
https://access.redhat.com/errata/RHSA-2020:0123
https://access.redhat.com/errata/RHSA-2020:0120
https://access.redhat.com/errata/RHSA-2020:0111
https://access.redhat.com/errata/RHSA-2020:0086
https://access.redhat.com/errata/RHSA-2020:0085
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00043.html
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00029.html