Improper Restriction of Rendered UI Layers or Frames Affecting thunderbird package, versions <0:91.4.0-3.el7_9


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.69% (81st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL7-THUNDERBIRD-2315432
  • published8 Dec 2021
  • disclosed7 Dec 2021

Introduced: 7 Dec 2021

CVE-2021-43538  (opens in a new tab)
CWE-1021  (opens in a new tab)

How to fix?

Upgrade RHEL:7 thunderbird to version 0:91.4.0-3.el7_9 or higher.
This issue was patched in RHSA-2021:5046.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

CVSS Scores

version 3.1