CVE-2019-17022
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…
Does this matter?
Lower severity and a low EPSS score (1.99%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.99% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- mozilla/firefox · mozilla/firefox esr · canonical/ubuntu linux · debian/debian linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server tus · redhat/enterprise linux workstation
- Source
- security@mozilla.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00043.html
- http://packetstormsecurity.com/files/155912/Slackware-Security-Advisory-mozilla-thunderbird-Updates.html
- https://access.redhat.com/errata/RHSA-2020:0085Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0086Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0111
- https://access.redhat.com/errata/RHSA-2020:0120
- https://access.redhat.com/errata/RHSA-2020:0123
- https://access.redhat.com/errata/RHSA-2020:0127
- https://access.redhat.com/errata/RHSA-2020:0292
- https://access.redhat.com/errata/RHSA-2020:0295
- https://bugzilla.mozilla.org/show_bug.cgi?id=1602843Permissions Required
- https://lists.debian.org/debian-lts-announce/2020/01/msg00005.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00016.html
- https://seclists.org/bugtraq/2020/Jan/12Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2020/Jan/18Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2020/Jan/26
- https://security.gentoo.org/glsa/202003-02
- https://usn.ubuntu.com/4234-1/Third Party Advisory
- https://usn.ubuntu.com/4241-1/
- https://usn.ubuntu.com/4335-1/
- https://www.debian.org/security/2020/dsa-4600Third Party Advisory
- https://www.debian.org/security/2020/dsa-4603
- https://www.mozilla.org/security/advisories/mfsa2020-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-02/Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00043.html
- http://packetstormsecurity.com/files/155912/Slackware-Security-Advisory-mozilla-thunderbird-Updates.html
- https://access.redhat.com/errata/RHSA-2020:0085Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0086Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.