Out-of-bounds Write Affecting firefox-esr package, versions <78.6.0esr-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.42% (75th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOXESR-1051655
  • published16 Dec 2020
  • disclosed7 Jan 2021

Introduced: 16 Dec 2020

CVE-2020-26971  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox-esr to version 78.6.0esr-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.

Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow on some video drivers. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

CVSS Scores

version 3.1