Cross-site Scripting (XSS) Affecting firefox package, versions <0:52.1.0-2.el7_3


Severity

Recommended
critical

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.24% (64th percentile)

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  • Snyk IDSNYK-RHEL7-FIREFOX-4679186
  • published26 Jul 2021
  • disclosed19 Apr 2017

Introduced: 19 Apr 2017

CVE-2017-5466  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade RHEL:7 firefox to version 0:52.1.0-2.el7_3 or higher.
This issue was patched in RHSA-2017:1106.

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:7 relevant fixed versions and status.

If a page is loaded from an original site through a hyperlink and contains a redirect to a "data:text/html" URL, triggering a reload will run the reloaded "data:text/html" page with its origin set incorrectly. This allows for a cross-site scripting (XSS) attack. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.