CVE-2021-32066

2021-08-0119:15:07

Google

osv.dev

7.4 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

0.002 Low

EPSS

Percentile

63.8%

JSON

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.”

CPENameOperatorVersion
rubyeq2_7_0_preview3
rubyeq1.8.7_p174-r0
rubyeq1.8.7_p160-r3
rubyeq2.0.0_p481-r0
rubyeq2.3.1-r0
rubyeq2.2.3-r1
rubyeq2.1.5-r0
rubyeq2.7.1-r3
rubyeq2_7_0_rc2
rubyeq1.9.3_p392-r0

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