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Incorrect Authorization Affecting firefox-esr package, versions <91.3.0esr-1

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.7% (81st percentile)
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NVD
10 critical
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SUSE
7.5 high
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Red Hat
10 critical

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  • Snyk ID SNYK-DEBIAN12-FIREFOXESR-1909774
  • published 3 Nov 2021
  • disclosed 8 Dec 2021
Report a new vulnerability Found a mistake?

Introduced: 3 Nov 2021

CVE-2021-38503 Open this link in a new tab
CWE-863 Open this link in a new tab

How to fix?

Upgrade Debian:12 firefox-esr to version 91.3.0esr-1 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 Debian. See How to fix? for Debian:12 relevant fixed versions and status.

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.