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CVE-2021-38502 Affecting thunderbird package, versions <1:91.4.1-1~deb10u1

0.0
medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High

    Threat Intelligence

    EPSS 0.2% (59th percentile)
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NVD
5.9 medium
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SUSE
5.9 medium
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Red Hat
7.5 high

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  • Snyk ID SNYK-DEBIAN10-THUNDERBIRD-1730531
  • published 13 Oct 2021
  • disclosed 3 Nov 2021
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Introduced: 13 Oct 2021

CVE-2021-38502 Open this link in a new tab

How to fix?

Upgrade Debian:10 thunderbird to version 1:91.4.1-1~deb10u1 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:10 relevant fixed versions and status.

Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, too. This vulnerability affects Thunderbird < 91.2.