VDB
CVE-2021-20206
CVE-2021-20206
PUBLISHED
CVSS 7.199999809265137 HIGH
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.
EPSS 1.53% · 72.4th percentile
Risk Scores
CVSS 3.1
7.199999809265137
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score
1.53%
72.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | golang-github-appc-cni | 0, 0.3.0+dfsg-1 |
| Ubuntu:24.04:LTS | golang-github-appc-cni | 1.1.2-1, 0 |
| Ubuntu:25.10 | golang-github-appc-cni | 0, 1.1.2-1 |
| Ubuntu:20.04:LTS | golang-github-appc-cni | 0, 0.4.0+dfsg-1, 0.7.1-2 |
| Ubuntu:22.04:LTS | golang-github-appc-cni | 0, 0.8.1-1, 1.0.1-3 |
Timeline
- Mar 26, 2021 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 28, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 7, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-20206 third-party-advisory
- https://github.com/containernetworking/cni/pull/808 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1919391 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-20206 third-party-advisory