CVE-2021-20206

2021-03-2621:34:58

CWE-20

redhat

www.cve.org

cve-2021-20206

containernetworking/cni

path name limitation

network configuration

special elements

binaries

vulnerability

confidentiality

integrity

system availability

AI Score

7.4

Confidence

High

EPSS

0.001

Percentile

47.3%

JSON

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.

CNA Affected

[
  {
    "product": "containernetworking-cni",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "containernetworking/cni 0.8.1"
      }
    ]
  }
]