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MitreCVELIST:CVE-2021-32066HistoryAug 01, 2021 - 12:00 a.m.
CVE-2021-32066
2021-08-0100:00:00
mitre
www.cve.org
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.”
References
github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a
hackerone.com/reports/1178562
lists.debian.org/debian-lts-announce/2021/10/msg00009.html
lists.debian.org/debian-lts-announce/2023/04/msg00033.html
security.gentoo.org/glsa/202401-27
security.netapp.com/advisory/ntap-20210902-0004/
www.oracle.com/security-alerts/cpuapr2022.html
www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/
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