KubeEdge is an open source system for extending native containerized application orchestration capabilities to hosts at Edge. From 1.12.0 until 1.21.2, 1.22.2, and 1.23.1, the v1alpha2 NodeUpgradeJob handler in edge/pkg/taskmanager/actions/nodeupgradejob.go concatenates authenticated user-controlled spec.version and spec.image values into the keadm upgrade edge shell command. A user with permission to create or update NodeUpgradeJob resources can supply shell metacharacters in either field, causing arbitrary commands to execute on targeted edge nodes with the privileges of the upgrade process and compromising node confidentiality, integrity, and availability.
This issue is fixed in versions 1.21.2, 1.22.2, and 1.23.1.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 13
https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.21.md
security-advisories@github.com
https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.22.md
security-advisories@github.com
https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.23.md
security-advisories@github.com
https://github.com/kubeedge/kubeedge/commit/552af457a4c7ce80ea1678ab5889f475b36…
security-advisories@github.com
https://github.com/kubeedge/kubeedge/commit/657b745bebcdd7a221eb34c0aac13231ef1…
security-advisories@github.com
https://github.com/kubeedge/kubeedge/commit/b72db7f8a0f7be23261b4349eab33024b20…
security-advisories@github.com
https://github.com/kubeedge/kubeedge/pull/7028
security-advisories@github.com
https://github.com/kubeedge/kubeedge/pull/7029
security-advisories@github.com
https://github.com/kubeedge/kubeedge/pull/7030
security-advisories@github.com
https://github.com/kubeedge/kubeedge/releases/tag/v1.21.2
security-advisories@github.com
https://github.com/kubeedge/kubeedge/releases/tag/v1.22.2
security-advisories@github.com
https://github.com/kubeedge/kubeedge/releases/tag/v1.23.1
security-advisories@github.com
https://github.com/kubeedge/kubeedge/security/advisories/GHSA-5jpj-293f-rhvj
security-advisories@github.com