Improper Input Validation Affecting containernetworking-plugins package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.12% (49th percentile)

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  • Snyk IDSNYK-RHEL7-CONTAINERNETWORKINGPLUGINS-1404131
  • published26 Jul 2021
  • disclosed5 Feb 2021

Introduced: 5 Feb 2021

CVE-2021-20206  (opens in a new tab)
CWE-20  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 containernetworking-plugins.

NVD Description

Note: Versions mentioned in the description apply only to the upstream containernetworking-plugins package and not the containernetworking-plugins package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

An improper limitation of path name flaw was found in containernetworking/cni in versions before 0.8.1. When specifying the plugin to load in the 'type' field in the network configuration, it is possible to use special elements such as "../" separators to reference binaries elsewhere on the system. This flaw allows an attacker to execute other existing binaries other than the cni plugins/types, such as 'reboot'. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS Scores

version 3.1