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CVE-2021-32066 Detail

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."


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-755 Improper Handling of Exceptional Conditions cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

10 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-32066
NVD Published Date:
08/01/2021
NVD Last Modified:
01/24/2024
Source:
MITRE