Cleartext Transmission of Sensitive Information Affecting thunderbird package, versions <0:91.2.0-1.el7_9


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.2% (59th percentile)

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  • Snyk IDSNYK-RHEL7-THUNDERBIRD-8013137
  • published17 Sept 2024
  • disclosed6 Oct 2021

Introduced: 6 Oct 2021

CVE-2021-38502  (opens in a new tab)
CWE-319  (opens in a new tab)

How to fix?

Upgrade RHEL:7 thunderbird to version 0:91.2.0-1.el7_9 or higher.
This issue was patched in RHSA-2021:3841.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by RHEL. See How to fix? for RHEL:7 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.

CVSS Scores

version 3.1