Cross-site Scripting (XSS) Affecting firefox-esr package, versions <68.4.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.45% (75th percentile)

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  • Snyk IDSNYK-ALPINE320-FIREFOXESR-7010345
  • published23 May 2024
  • disclosed8 Jan 2020

Introduced: 8 Jan 2020

CVE-2019-17022  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Alpine:3.20 firefox-esr to version 68.4.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

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.

CVSS Scores

version 3.1