CVE-2024-28250CWE-311

Cilium has possible unencrypted traffic between nodes when using WireGuard and L7 policies

Medium · published March 18, 2024

CVSS v3.1
6.1
EPSS
0%
Percentile
6.2
In the wild
Unconfirmed
What it is

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.14.0 and prior to versions 1.14.8 and 1.15.2, In Cilium clusters with WireGuard enabled and traffic matching Layer 7 policies Wireguard-eligible traffic that is sent between a node's Envoy proxy and pods on other nodes is sent unencrypted and Wireguard-eligible traffic that is sent between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.14.8 and 1.15.2 in in native routing mode (`routingMode=native`) and in Cilium 1.14.4 in tunneling mode (`routingMode=tunnel`). Not that in tunneling mode, `encryption.wireguard.encapsulate` must be set to `true`. There is no known workaround for this issue.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00172 · 6.2th percentile
Weakness
CWE-311 · Missing Encryption of Sensitive Data
Published
2024-03-18T21:42Z
EPSS history
Timeline
  • 18 MAR 21:42Z
    Cilium has possible unencrypted traffic between nodes when using WireGuard and L7 policies
    cvelistv5