Cilium Fixes Race Condition Bug Affecting Network Policies
CVE-2024-42488

6.8MEDIUM

Key Information:

Vendor

Cilium

Status
Cilium
Vendor
CVE Published:
15 August 2024

What is CVE-2024-42488?

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.14.14 and 1.15.8, a race condition in the Cilium agent can cause the agent to ignore labels that should be applied to a node. This could in turn cause CiliumClusterwideNetworkPolicies intended for nodes with the ignored label to not apply, leading to policy bypass. This issue has been patched in Cilium v1.14.14 and v1.15.8 As the underlying issue depends on a race condition, users unable to upgrade can restart the Cilium agent on affected nodes until the affected policies are confirmed to be working as expected.

References

https://github.com/cilium/cilium/security/advisories/GHSA...
https://github.com/cilium/cilium/pull/33511
https://github.com/cilium/cilium/commit/aa44dd148a9be95e0...

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

.