Improper Validation of Certificate with Host Mismatch Affecting rsync package, versions <3.2.3-3


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.18% (55th percentile)

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  • Snyk IDSNYK-DEBIAN13-RSYNC-5694880
  • published4 Sept 2020
  • disclosed27 May 2021

Introduced: 4 Sep 2020

CVE-2020-14387  (opens in a new tab)
CWE-297  (opens in a new tab)

How to fix?

Upgrade Debian:13 rsync to version 3.2.3-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rsync package and not the rsync package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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 Scores

version 3.1