CVE-2021-20206

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Summary:

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.

Reference Links(if available):

  • https://bugzilla.redhat.com/show_bug.cgi?id=1919391
  • https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMCONTAINERNETWORKINGCNIPKGINVOKE-1070549
  • CVSS Score (if available)

    v2: / HIGH

    v3: /

    Links to Exploits(if available)