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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-DEBIANUNSTABLE-FIREFOXESR-1909756
  • 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:unstable 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:unstable 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.