Use After Free Affecting firefox package, versions <95.0-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.68% (80th percentile)

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  • Snyk IDSNYK-ALPINE319-FIREFOX-6108639
  • published8 Dec 2023
  • disclosed8 Dec 2021

Introduced: 8 Dec 2021

CVE-2021-43539  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Alpine:3.19 firefox to version 95.0-r0 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 Alpine. See How to fix? for Alpine:3.19 relevant fixed versions and status.

Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

CVSS Scores

version 3.1