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CVE-2020-14387

Published: 27 May 2021

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.

Priority

Medium

Cvss 3 Severity Score

7.4

Score breakdown

Status

Package Release Status
rsync
Launchpad, Ubuntu, Debian
upstream
Released (3.2.3-1)
bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
trusty Not vulnerable
(code not present)
xenial Not vulnerable
(code not present)
Patches:
upstream: https://git.samba.org/?p=rsync.git;a=commitdiff;h=c3f7414c450faaf6a8281cc4a4403529aeb7d859

Severity score breakdown

Parameter Value
Base score 7.4
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N