Out-of-Bounds Affecting firefox package, versions <86.0-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.18% (57th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOX-1078682
  • published24 Feb 2021
  • disclosed26 Feb 2021

Introduced: 24 Feb 2021

CVE-2021-23979  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox to version 86.0-1 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 developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86.

CVSS Scores

version 3.1