Rapid7 Vulnerability & Exploit Database

Debian: CVE-2021-43539: firefox-esr, thunderbird -- security update

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Debian: CVE-2021-43539: firefox-esr, thunderbird -- security update

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
12/08/2021
Created
12/31/2021
Added
12/30/2021
Modified
01/17/2022

Description

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.

Solution(s)

  • debian-upgrade-firefox-esr
  • debian-upgrade-thunderbird

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