Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXhqcXItZzc2Mi1weHdw

containernetworking/cni improper limitation of path name

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.

Specific Go Packages Affected

github.com/containernetworking/cni/pkg/invoke

Permalink: https://github.com/advisories/GHSA-xjqr-g762-pxwp
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXhqcXItZzc2Mi1weHdw
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 2 years ago
Updated: 7 months ago

CVSS Score: 7.2
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-xjqr-g762-pxwp, CVE-2021-20206
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-20206
• https://github.com/containernetworking/cni/pull/808
• https://bugzilla.redhat.com/show_bug.cgi?id=1919391
• https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMCONTAINERNETWORKINGCNIPKGINVOKE-1070549
• https://pkg.go.dev/vuln/GO-2022-0230
• https://github.com/advisories/GHSA-xjqr-g762-pxwp

Repository: https://github.com/containernetworking/cni
Blast Radius: 30.2

Affected Packages