XML Injection Affecting firefox package, versions <0:91.5.0-1.el8_5.alma


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.25% (66th percentile)

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  • Snyk IDSNYK-ALMALINUX8-FIREFOX-5618996
  • published28 May 2023
  • disclosed12 Jan 2022

Introduced: 12 Jan 2022

CVE-2021-4140  (opens in a new tab)
CWE-91  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 firefox to version 0:91.5.0-1.el8_5.alma or higher.
This issue was patched in ALSA-2022:0130.

NVD Description

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

It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

CVSS Scores

version 3.1