CVE-2021-32066

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

01/08/2021

Last modified:

24/01/2024

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."

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.40 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

7.40

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:M/Au:N/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): None

Base Score 2.0

5.80

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:ruby-lang:ruby::::::::	2.6.0 (including)	2.6.7 (including)
cpe:2.3:a:ruby-lang:ruby::::::::	2.7.0 (including)	2.7.3 (including)
cpe:2.3:a:ruby-lang:ruby::::::::	3.0.0 (including)	3.0.1 (including)
cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools::::::::		9.2.6.1 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-32066

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools