CVE-2019-17022

 

Published at: - 08-01-2020 11:15

Last modified: - 24-09-2022 03:03

Total changes: - 2

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://bugzilla.mozilla.org/show_bug.cgi?id=1602843
• https://www.mozilla.org/security/advisories/mfsa2020-01/
• https://www.mozilla.org/security/advisories/mfsa2020-02/
• 20200109 [SECURITY] [DSA 4600-1] firefox-esr security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20200109 [SECURITY] [DLA 2061-1] firefox-esr security update-Mailing List, Third Party Advisory
• DSA-4600-Third Party Advisory
• USN-4234-1-Third Party Advisory
• 20200112 [slackware-security] mozilla-thunderbird (SSA:2020-010-01)-Mailing List, Third Party Advisory
• RHSA-2020:0086-Third Party Advisory
• RHSA-2020:0085-Third Party Advisory
• http://packetstormsecurity.com/files/155912/Slackware-Security-Advisory-mozilla-thunderbird-Updates.html
• RHSA-2020:0111-
• openSUSE-SU-2020:0060-
• RHSA-2020:0123-
• RHSA-2020:0120-
• RHSA-2020:0127-
• USN-4241-1-
• DSA-4603-
• 20200120 [SECURITY] [DSA 4603-1] thunderbird security update-
• [debian-lts-announce] 20200120 [SECURITY] [DLA 2071-1] thunderbird security update-
• openSUSE-SU-2020:0094-
• RHSA-2020:0295-
• RHSA-2020:0292-
• GLSA-202003-02-
• USN-4335-1-

 

Keywords

NVD

 

CVE-2019-17022

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures