CVE-2021-32066

Name
CVE-2021-32066
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."
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
CONFIRM https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a
CONFIRM https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/
MISC https://hackerone.com/reports/1178562
Third Party Advisory https://security.netapp.com/advisory/ntap-20210902-0004/
Third Party Advisory https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html
MISC https://www.oracle.com/security-alerts/cpuapr2022.html
cve@mitre.org https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
cve@mitre.org https://security.gentoo.org/glsa/202401-27

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* ruby >= 2.6.0 <= 2.6.7
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* ruby >= 2.7.0 <= 2.7.3
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* ruby >= 3.0.0 <= 3.0.1

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
ruby edge-main 2.7.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
ruby edge-main 2.7.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
ruby edge-main 2.7.2-r0 None possibly vulnerable
ruby edge-main 2.6.6-r0 None possibly vulnerable
ruby edge-main 2.6.5-r0 None possibly vulnerable
ruby 3.22-main 2.7.4-r0 None fixed
ruby 3.22-main 2.7.3-r0 None possibly vulnerable
ruby 3.22-main 2.7.2-r0 None possibly vulnerable
ruby 3.22-main 2.6.6-r0 None possibly vulnerable
ruby 3.22-main 2.6.5-r0 None possibly vulnerable
ruby 3.21-main 2.7.4-r0 None fixed
ruby 3.21-main 2.7.3-r0 None possibly vulnerable
ruby 3.21-main 2.7.2-r0 None possibly vulnerable
ruby 3.21-main 2.6.6-r0 None possibly vulnerable
ruby 3.21-main 2.6.5-r0 None possibly vulnerable
ruby 3.20-main 2.7.4-r0 None fixed
ruby 3.20-main 2.7.3-r0 None possibly vulnerable
ruby 3.20-main 2.7.2-r0 None possibly vulnerable
ruby 3.20-main 2.6.6-r0 None possibly vulnerable
ruby 3.20-main 2.6.5-r0 None possibly vulnerable
ruby 3.19-main 2.7.4-r0 None fixed
ruby 3.19-main 2.7.3-r0 None possibly vulnerable
ruby 3.19-main 2.7.2-r0 None possibly vulnerable
ruby 3.19-main 2.6.6-r0 None possibly vulnerable
ruby 3.19-main 2.6.5-r0 None possibly vulnerable
ruby 3.18-main 2.7.4-r0 None fixed
ruby 3.17-main 2.7.4-r0 None fixed
ruby 3.12-main 2.7.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
ruby 3.11-main 2.6.8-r0 Natanael Copa <ncopa@alpinelinux.org> fixed