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CVE-2021-23953 Affecting thunderbird package, versions <1:78.7.0-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 0.11% (43rd percentile)
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NVD
4.3 medium
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SUSE
7.5 high
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Red Hat
4.3 medium

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  • Snyk ID SNYK-DEBIAN11-THUNDERBIRD-1065877
  • published 27 Jan 2021
  • disclosed 26 Feb 2021
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Introduced: 27 Jan 2021

CVE-2021-23953 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.

If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.