Cleartext Transmission of Sensitive Information Affecting github.com/cilium/cilium/bpf package, versions >=1.14.0 <1.14.8>=1.15.0 <1.15.2


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMCILIUMCILIUMBPF-6457869
  • published19 Mar 2024
  • disclosed18 Mar 2024
  • creditMarco Iorio

Introduced: 18 Mar 2024

CVE-2024-28250  (opens in a new tab)
CWE-319  (opens in a new tab)

How to fix?

Upgrade github.com/cilium/cilium/bpf to version 1.14.8, 1.15.2 or higher.

Overview

Affected versions of this package are vulnerable to Cleartext Transmission of Sensitive Information due to improper handling of traffic encryption between nodes when using WireGuard in conjunction with Layer 7 policies. Specifically, traffic that should be encrypted by WireGuard is transmitted unencrypted between a node's Envoy proxy and pods on other nodes, as well as between a node's DNS proxy and pods on other nodes. This vulnerability exposes sensitive data to potential interception and undermines the security guarantees provided by WireGuard encryption.

Note:

This issue affects:

  1. In native routing mode (routingMode=native):

Cilium v1.14 versions before v1.14.8

Cilium v1.15 versions before v1.15.2

  1. In tunneling mode (routingMode=tunnel):

Cilium v1.14 versions before v1.14.4

Cilium v1.14.4 if encryption.wireguard.encapsulate is set to false (default).

References

CVSS Scores

version 3.1