Improper Authorization Affecting github.com/kyverno/kyverno/pkg/controllers/exceptions package, versions <1.13.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMKYVERNOKYVERNOPKGCONTROLLERSEXCEPTIONS-8310959
- published31 Oct 2024
- disclosed30 Oct 2024
- creditJoel Eidsath
Introduced: 30 Oct 2024
CVE-2024-48921 Â (opens in a new tab)How to fix?
Upgrade github.com/kyverno/kyverno/pkg/controllers/exceptions to version 1.13.0 or higher.
Overview
Affected versions of this package are vulnerable to Improper Authorization due to the default configuration that allows the creation of PolicyException objects in any namespace. An attacker with privileges to non-kyverno namespaces can bypass intended security policies by exploiting this misconfiguration.
PoC
Administrator creates "disallow-privileged-containers" ClusterPolicy that applies to resources in the namespace "ubuntu-restricted"
Cluster user creates a PolicyException object for "disallow-privileged-containers" in namespace "ubuntu-restricted"
Cluster user creates a pod with a privileged container in "ubuntu-restricted"
Cluster user escalates to root on the node from the privileged container