Information Exposure Affecting firefox package, versions <77.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.17% (55th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOX-570859
  • published2 Jun 2020
  • disclosed9 Jul 2020

Introduced: 2 Jun 2020

CVE-2020-12407  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox to version 77.0-1 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.

Mozilla Developer Nicolas Silva found that when using WebRender, Firefox would under certain conditions leak arbitrary GPU memory to the visible screen. The leaked memory content was visible to the user, but not observable from web content. This vulnerability affects Firefox < 77.

CVSS Scores

version 3.1