Time-of-check Time-of-use (TOCTOU) Affecting firefox-esr package, versions <91.7.0esr-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.23% (63rd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOXESR-2420075
  • published9 Mar 2022
  • disclosed22 Dec 2022

Introduced: 9 Mar 2022

CVE-2022-26387  (opens in a new tab)
CWE-367  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox-esr to version 91.7.0esr-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.

When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.

CVSS Scores

version 3.1