CVE-2024-48921

描述

### Summary A kyverno ClusterPolicy, ie. "disallow-privileged-containers," can be overridden by the creation of a PolicyException in a random namespace. ### Details By design, PolicyExceptions are consumed from any namespace. Administrators may not recognize that this allows users with privileges to non-kyverno namespaces to create exceptions. ### PoC 1. Administrator creates "disallow-privileged-containers" ClusterPolicy that applies to resources in the namespace "ubuntu-restricted" 2. Cluster user creates a PolicyException object for "disallow-privileged-containers" in namespace "ubuntu-restricted" 3. Cluster user creates a pod with a privileged container in "ubuntu-restricted" 4. Cluster user escalates to root on the node from the privileged container ### Impact Administrators attempting to enforce cluster security through kyverno policies, but that allow less privileged users to create resources

受影響套件(3)

• Bitnami/kyvernofrom 0, < 1.13.0
• Go/github.com/kyverno/kyvernofrom 0, < 1.13.0
• Go/github.com/kyverno/kyvernofrom 0, < 1.13.0

CVSS 分數

參考連結(3)

• ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2024-48921
• PATCHhttps://github.com/kyverno/kyverno
• WEBhttps://github.com/kyverno/kyverno/security/advisories/GHSA-qjvc-p88j-j9rm