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Misconfiguration
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CVE Vulnerabilities

CVE-2021-32066

Improper Handling of Exceptional Conditions

Published: Aug 01, 2021 | Modified: Nov 21, 2024
CVSS 3.x
7.4
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.x
5.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N
RedHat/V2
RedHat/V3
7.4 MODERATE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-32066
CWEhttps://cwe.mitre.org/data/definitions/755.html

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.

Weakness

The product does not handle or incorrectly handles an exceptional condition.

Affected Software

NameVendorStart VersionEnd Version
RubyRuby-lang2.6.0 (including)2.6.7 (including)
RubyRuby-lang2.7.0 (including)2.7.3 (including)
RubyRuby-lang3.0.0 (including)3.0.1 (including)
Red Hat Enterprise Linux 8RedHatruby:2.7-8040020210728141159.522a0ee4*
Red Hat Enterprise Linux 8RedHatruby:2.6-8050020211215144356.c5368500*
Red Hat Enterprise Linux 8RedHatruby:2.5-8050020220216195847.c5368500*
Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRedHatruby:2.6-8010020220201152941.c27ad7f8*
Red Hat Enterprise Linux 8.2 Extended Update SupportRedHatruby:2.6-8020020220201131207.4cda2c84*
Red Hat Enterprise Linux 8.4 Extended Update SupportRedHatruby:2.6-8040020220131135901.522a0ee4*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-ruby27-ruby-0:2.7.4-130.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-ruby30-ruby-0:3.0.2-148.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-ruby26-ruby-0:2.6.9-120.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-ruby27-ruby-0:2.7.4-130.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-ruby30-ruby-0:3.0.2-148.el7*
Ruby1.9.1Ubuntutrusty*
Ruby2.0Ubuntutrusty*
Ruby2.3Ubuntuesm-infra/xenial*
Ruby2.3Ubuntuxenial*
Ruby2.5Ubuntubionic*
Ruby2.5Ubuntuesm-infra/bionic*
Ruby2.7Ubuntuesm-infra/focal*
Ruby2.7Ubuntufocal*
Ruby2.7Ubuntugroovy*
Ruby2.7Ubuntuhirsute*
Ruby2.7Ubuntuimpish*

References

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