CVE-2024-28250: Unencrypted traffic between nodes when using WireGuard and L7 policies

March 18, 2024

In Cilium clusters with WireGuard enabled and traffic matching Layer 7 policies:

Traffic that should be WireGuard-encrypted is sent unencrypted between a node’s Envoy proxy and pods on other nodes.
Traffic that should be WireGuard-encrypted is sent unencrypted between a node’s DNS proxy and pods on other nodes.

References

github.com/advisories/GHSA-v6q2-4qr3-5cw6
github.com/cilium/cilium
github.com/cilium/cilium/security/advisories/GHSA-v6q2-4qr3-5cw6
nvd.nist.gov/vuln/detail/CVE-2024-28250

Code Behaviors & Features

Detect and mitigate CVE-2024-28250 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →