CVE-2019-17016 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Reference

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-2020:0085 https://access.redhat.com/errata/RHSA-2020:0086 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=1599181 https://lists.debian.org/debian-lts-announce/2020/01/msg00005.html https://lists.debian.org/debian-lts-announce/2020/01/msg00016.html https://seclists.org/bugtraq/2020/Jan/12 https://seclists.org/bugtraq/2020/Jan/18 https://seclists.org/bugtraq/2020/Jan/26 https://security.gentoo.org/glsa/202003-02 https://usn.ubuntu.com/4234-1/ https://usn.ubuntu.com/4241-1/ https://usn.ubuntu.com/4335-1/ https://www.debian.org/security/2020/dsa-4600 https://www.debian.org/security/2020/dsa-4603 https://www.mozilla.org/security/advisories/mfsa2020-01/ https://www.mozilla.org/security/advisories/mfsa2020-02/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.1