containernetworking-cni

CVE-2021-20206
HIGH 7.2

At a glance

Source
NVD
EPSS
EPSS 1.52 % · percentile 75 ()
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Modified

Description

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.

Weaknesses (CWE)

  • CWE-20 — Improper Input Validation
  • CWE-22 — Improper Limitation of a Pathname to a Restricted Directory

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)
CVSS 2.0MEDIUM 6.5AV:N/AC:L/Au:S/C:P/I:P/A:PNVD · nvd@nist.gov (Primary)

Advisories

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
containernetworking-cniaffected containernetworking/cni 0.8.1

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD