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Inadequate Encryption Strength Affecting ruby2.7 package, versions <2.7.4-1

0.0
high

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High

    Threat Intelligence

    EPSS 0.24% (64th percentile)
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NVD
7.4 high
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SUSE
7.4 high
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Red Hat
7.4 high

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  • Snyk ID SNYK-DEBIAN11-RUBY27-1316295
  • published 8 Jul 2021
  • disclosed 1 Aug 2021
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Introduced: 8 Jul 2021

CVE-2021-32066 Open this link in a new tab
CWE-326 Open this link in a new tab

How to fix?

Upgrade Debian:11 ruby2.7 to version 2.7.4-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.7 package and not the ruby2.7 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."