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CVE-2020-26967 Affecting firefox package, versions <83.0-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Integrity High

    Threat Intelligence

    EPSS 0.08% (35th percentile)
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NVD
6.5 medium

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  • Snyk ID SNYK-DEBIANUNSTABLE-FIREFOX-1041080
  • published 18 Nov 2020
  • disclosed 9 Dec 2020
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Introduced: 18 Nov 2020

CVE-2020-26967 Open this link in a new tab

How to fix?

Upgrade Debian:unstable firefox to version 83.0-1 or higher.

NVD Description

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

When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected into the page. This would lead to internal errors and unexpected behavior in the Screenshots code. This vulnerability affects Firefox < 83.