Incorrect Authorization Affecting firefox package, versions <89.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.76% (51st percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOX-1298579
  • published2 Jun 2021
  • disclosed24 Jun 2021

Introduced: 2 Jun 2021

CVE-2021-29961  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox to version 89.0-1 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 styling and rendering an oversized &lt;select&gt; element, Firefox did not apply correct clipping which allowed an attacker to paint over the user interface. This vulnerability affects Firefox < 89.

CVSS Base Scores

version 3.1