Incorrect Type Conversion or Cast Affecting firefox-esr package, versions <91.4.1esr-1~deb11u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.46% (76th percentile)

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  • Snyk IDSNYK-DEBIAN11-FIREFOXESR-2311987
  • published8 Dec 2021
  • disclosed8 Dec 2021

Introduced: 8 Dec 2021

CVE-2021-43537  (opens in a new tab)
CWE-704  (opens in a new tab)

How to fix?

Upgrade Debian:11 firefox-esr to version 91.4.1esr-1~deb11u1 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:11 relevant fixed versions and status.

An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

CVSS Scores

version 3.1