CVE - CVE-2021-32066

CVE-ID
CVE-2021-32066	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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."
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a URL:https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a CONFIRM:https://security.netapp.com/advisory/ntap-20210902-0004/ URL:https://security.netapp.com/advisory/ntap-20210902-0004/ CONFIRM:https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/ URL:https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/ GENTOO:GLSA-202401-27 URL:https://security.gentoo.org/glsa/202401-27 MISC:https://hackerone.com/reports/1178562 URL:https://hackerone.com/reports/1178562 MISC:https://www.oracle.com/security-alerts/cpuapr2022.html URL:https://www.oracle.com/security-alerts/cpuapr2022.html MLIST:[debian-lts-announce] 20211013 [SECURITY] [DLA 2780-1] ruby2.3 security update URL:https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html MLIST:[debian-lts-announce] 20230430 [SECURITY] [DLA 3408-1] jruby security update URL:https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
Assigning CNA
MITRE Corporation
Date Record Created
20210506	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20210506)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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