Vulnerability CVE-2020-14387

Vulnerability Name:

CVE-2020-14387 (CCN-202746)

Assigned:

2020-06-17

Published:

2021-02-16

Updated:

2021-06-09

Summary:

A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate with host mismatch vulnerability. A remote, unauthenticated attacker could exploit the flaw by performing a man-in-the-middle attack using a valid certificate for another hostname which could compromise confidentiality and integrity of data transmitted using rsync-ssl. The highest threat from this vulnerability is to data confidentiality and integrity. This flaw affects rsync versions before 3.2.4.

CVSS v3 Severity:

7.4 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
6.4 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)

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

9.1 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
7.9 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)

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

CVSS v2 Severity:

5.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): None

9.4 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): None

Vulnerability Type:

CWE-297

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2020-14387

Source: CCN
Type: Red Hat Bugzilla Bug 1875549
(CVE-2020-14387) - CVE-2020-14387 rsync: rsync-ssl does not verify the hostname in the server certificate when using openssl

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1875549

Source: XF
Type: UNKNOWN
rsync-cve202014387-mitm(202746)

Source: CCN
Type: rsync.git Repository
rsync-ssl: Verify the hostname in the certificate when using openssl.

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-14387

Vulnerable Configuration:

Configuration 1:

cpe:/a:samba:rsync:3.2.0:-:*:*:*:*:*:*

OR cpe:/a:samba:rsync:3.2.0:pre1:*:*:*:*:*:*

OR cpe:/a:samba:rsync:3.2.0:pre2:*:*:*:*:*:*

OR cpe:/a:samba:rsync:3.2.0:pre3:*:*:*:*:*:*

OR cpe:/a:samba:rsync:*:*:*:*:*:*:*:* (Version >= 3.2.1 and < 3.2.4)

Configuration CCN 1:

cpe:/a:samba:rsync:3.2.3:-:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:7796	P	rsync-3.2.3-150400.3.8.1 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:3190	P	libjansson4-2.12-3.5.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:94820	P	rsync-3.2.3-150400.1.53 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:354	P	rsync-3.2.3-150400.1.53 on GA media (Moderate)	2022-06-10
oval:org.opensuse.security:def:113347	P	rsync-3.2.3-2.6 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:106754	P	Security update for glib-networking (Important)	2021-12-10

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