CVEvulnerability

CVE-2019-17022

6.1 MEDIUM Published 2020-01-08 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-01-08
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
Weaknesses
CWE-79

Description

When pasting a &lt;style&gt; tag from the clipboard into a rich text editor, the CSS sanitizer does not escape &lt; and &gt; 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.

Affected configurations

• mozilla firefox (< 72.0) • mozilla firefox esr (< 68.4) • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 19.04 • canonical ubuntu linux 19.10 • debian debian linux 8.0 • debian debian linux 9.0 • debian debian linux 10.0 • redhat enterprise linux desktop 6.0 • redhat enterprise linux desktop 7.0 • redhat enterprise linux server 6.0 • redhat enterprise linux server 7.0 • redhat enterprise linux server aus 7.7 • redhat enterprise linux server tus 7.7 • redhat enterprise linux workstation 6.0 • redhat enterprise linux workstation 7.0

Related

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References