Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mozilla Firefox ESR
before 68.4affected
Mozilla Firefox
before 72affected
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1599181 ↗
- https://www.mozilla.org/security/advisories/mfsa2020-01/ ↗
- https://www.mozilla.org/security/advisories/mfsa2020-02/ ↗
- https://seclists.org/bugtraq/2020/Jan/12 ↗
- https://lists.debian.org/debian-lts-announce/2020/01/msg00005.html ↗
- https://www.debian.org/security/2020/dsa-4600 ↗
- https://usn.ubuntu.com/4234-1/ ↗
- https://seclists.org/bugtraq/2020/Jan/18 ↗
- https://access.redhat.com/errata/RHSA-2020:0085 ↗
- https://access.redhat.com/errata/RHSA-2020:0086 ↗
- http://packetstormsecurity.com/files/155912/Slackware-Security-Advisory-mozilla-thunderbird-Updates.html ↗
- https://access.redhat.com/errata/RHSA-2020:0111 ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00029.html ↗
- 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://usn.ubuntu.com/4241-1/ ↗
- https://www.debian.org/security/2020/dsa-4603 ↗
- https://seclists.org/bugtraq/2020/Jan/26 ↗
- https://lists.debian.org/debian-lts-announce/2020/01/msg00016.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00043.html ↗
- https://access.redhat.com/errata/RHSA-2020:0292 ↗
- https://access.redhat.com/errata/RHSA-2020:0295 ↗
- https://security.gentoo.org/glsa/202003-02 ↗
- https://usn.ubuntu.com/4335-1/ ↗