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Vulnerability · Published May 27, 2021 · Assigned by redhat

CVE-2020-14387

High 7.4

In plain English

A high-severity security flaw in rsync. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.4High
Exploit odds (30 days)1.1%top 34.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12rsync3.2.3-3DEBIAN-CVE-2020-14387
Debian:13rsync3.2.3-3DEBIAN-CVE-2020-14387
Debian:14rsync3.2.3-3DEBIAN-CVE-2020-14387

Affected products (as reported)

VendorProductVersions
n/a rsync rsync 3.2.4

Weakness: CWE-297

References