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CVE-2020-26976 Affecting thunderbird package, versions <1:78.7.0-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Integrity High

    Threat Intelligence

    EPSS 0.6% (79th percentile)
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NVD
6.5 medium
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Red Hat
6.1 medium
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SUSE
6.1 medium

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  • Snyk ID SNYK-DEBIAN11-THUNDERBIRD-1065868
  • published 16 Dec 2020
  • disclosed 7 Jan 2021
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Introduced: 16 Dec 2020

CVE-2020-26976 Open this link in a new tab

How to fix?

Upgrade Debian:11 thunderbird to version 1:78.7.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former, the service worker could have intercepted the request for the secure page despite the iframe not being a secure context due to the (insecure) framing. This vulnerability affects Firefox < 84.