Vulnerability Details CVE-2021-20206
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 39.3%
CVSS Severity
CVSS v3 Score 7.2
CVSS v2 Score 6.5
References
Products affected by CVE-2021-20206
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cpe:2.3:a:linuxfoundation:container_network_interface:0.1.0
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cpe:2.3:a:linuxfoundation:container_network_interface:0.2.0
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cpe:2.3:a:linuxfoundation:container_network_interface:0.2.1
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cpe:2.3:a:linuxfoundation:container_network_interface:0.2.2
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cpe:2.3:a:linuxfoundation:container_network_interface:0.2.3
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cpe:2.3:a:linuxfoundation:container_network_interface:0.3.0
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cpe:2.3:a:linuxfoundation:container_network_interface:0.4.0
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cpe:2.3:a:linuxfoundation:container_network_interface:0.5.0
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cpe:2.3:a:linuxfoundation:container_network_interface:0.5.1
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cpe:2.3:a:linuxfoundation:container_network_interface:0.5.2
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cpe:2.3:a:linuxfoundation:container_network_interface:0.6.0
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cpe:2.3:a:linuxfoundation:container_network_interface:0.7.0
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cpe:2.3:a:linuxfoundation:container_network_interface:0.7.1
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cpe:2.3:a:linuxfoundation:container_network_interface:0.8.0