DEBIAN-CVE-2021-20206

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2021-20206
Published: 26 Mar 2021, 22:15
Last modified:28 Apr 2026, 20:21

Vulnerability Summary

Overall Risk (default)
medium
29/100
CVSS Score
7.2 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Mar 2021, 22:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:21
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•golang-github-appc-cni

    < 0.8.1-1 | < 0.8.1-1 | < 0.8.1-1 | < 0.8.1-1

References (1)