Insufficient Verification of Data Authenticity Affecting inetutils package, versions <2:1.9.4-1ubuntu0.1~esm2


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.3% (54th percentile)

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  • Snyk IDSNYK-UBUNTU1604-INETUTILS-1613968
  • published19 Aug 2025
  • disclosed3 Sept 2021

Introduced: 3 Sep 2021

CVE-2021-40491  (opens in a new tab)
CWE-345  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 inetutils to version 2:1.9.4-1ubuntu0.1~esm2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream inetutils package and not the inetutils package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.

CVSS Base Scores

version 3.1