Cross-site Scripting (XSS) Affecting firefox package, versions <0:68.5.0-2.el8_1


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.25% (87th percentile)

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  • Snyk IDSNYK-RHEL8-FIREFOX-3672164
  • published26 Jul 2021
  • disclosed11 Feb 2020

Introduced: 11 Feb 2020

CVE-2020-6798  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade RHEL:8 firefox to version 0:68.5.0-2.el8_1 or higher.
This issue was patched in RHSA-2020:0512.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.

CVSS Scores

version 3.1