vulnerability
Red Hat: CVE-2021-32066: CVE-2021-32066 ruby: StartTLS stripping vulnerability in Net::IMAP (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:P/I:P/A:N) | Aug 1, 2021 | Aug 6, 2021 | Jul 9, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Aug 1, 2021
Added
Aug 6, 2021
Modified
Jul 9, 2025
Description
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."
Solution(s)
no-fix-redhat-rpm-packageredhat-upgrade-rubyredhat-upgrade-ruby-debuginforedhat-upgrade-ruby-debugsourceredhat-upgrade-ruby-default-gemsredhat-upgrade-ruby-develredhat-upgrade-ruby-docredhat-upgrade-ruby-irbredhat-upgrade-ruby-libsredhat-upgrade-ruby-libs-debuginforedhat-upgrade-rubygem-abrtredhat-upgrade-rubygem-abrt-docredhat-upgrade-rubygem-bigdecimalredhat-upgrade-rubygem-bigdecimal-debuginforedhat-upgrade-rubygem-bsonredhat-upgrade-rubygem-bson-debuginforedhat-upgrade-rubygem-bson-debugsourceredhat-upgrade-rubygem-bson-docredhat-upgrade-rubygem-bundlerredhat-upgrade-rubygem-bundler-docredhat-upgrade-rubygem-did_you_meanredhat-upgrade-rubygem-io-consoleredhat-upgrade-rubygem-io-console-debuginforedhat-upgrade-rubygem-irbredhat-upgrade-rubygem-jsonredhat-upgrade-rubygem-json-debuginforedhat-upgrade-rubygem-minitestredhat-upgrade-rubygem-mongoredhat-upgrade-rubygem-mongo-docredhat-upgrade-rubygem-mysql2redhat-upgrade-rubygem-mysql2-debuginforedhat-upgrade-rubygem-mysql2-debugsourceredhat-upgrade-rubygem-mysql2-docredhat-upgrade-rubygem-net-telnetredhat-upgrade-rubygem-opensslredhat-upgrade-rubygem-openssl-debuginforedhat-upgrade-rubygem-pgredhat-upgrade-rubygem-pg-debuginforedhat-upgrade-rubygem-pg-debugsourceredhat-upgrade-rubygem-pg-docredhat-upgrade-rubygem-power_assertredhat-upgrade-rubygem-psychredhat-upgrade-rubygem-psych-debuginforedhat-upgrade-rubygem-rakeredhat-upgrade-rubygem-rdocredhat-upgrade-rubygem-test-unitredhat-upgrade-rubygem-xmlrpcredhat-upgrade-rubygemsredhat-upgrade-rubygems-devel
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