CVE-2021-32066

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."

CVSS v3.0 7.4 HIGH
CVSS v2.0 5.8 MEDIUM

7.4^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a	Patch Third Party Advisory
https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/	Vendor Advisory
https://hackerone.com/reports/1178562	Exploit Patch 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	Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:ruby-lang:ruby::::::::
	cpe:2.3:a:ruby-lang:ruby::::::::
	cpe:2.3:a:ruby-lang:ruby::::::::

Configuration 2 (hide)

cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*

Information

Published : 2021-08-01 12:15

Updated : 2022-05-10 11:03

NVD link : CVE-2021-32066

Mitre link : CVE-2021-32066

JSON object : View

CWE

CWE-326

Inadequate Encryption Strength

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Products Affected

oracle

jd_edwards_enterpriseone_tools

ruby-lang

ruby

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