Man-in-the-Middle (MitM) Affecting rsync package, versions [3.2.1,3.2.4)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.18% (55th percentile)

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  • Snyk IDSNYK-UNMANAGED-RSYNC-2370553
  • published26 Jan 2022
  • disclosed27 May 2021
  • creditUnknown

Introduced: 27 May 2021

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

How to fix?

Upgrade rsync to version 3.2.4 or higher.

Overview

Affected versions of this package are vulnerable to Man-in-the-Middle (MitM). 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