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.”
CPE | Name | Operator | Version |
---|---|---|---|
ruby | eq | 2_7_0_preview3 | |
ruby | eq | 1.8.7_p174-r0 | |
ruby | eq | 1.8.7_p160-r3 | |
ruby | eq | 2.0.0_p481-r0 | |
ruby | eq | 2.3.1-r0 | |
ruby | eq | 2.2.3-r1 | |
ruby | eq | 2.1.5-r0 | |
ruby | eq | 2.7.1-r3 | |
ruby | eq | 2_7_0_rc2 | |
ruby | eq | 1.9.3_p392-r0 |
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/