CVE-2024-42488 MEDIUM

CVE-2024-42488: Cilium agent's race condition may lead to policy bypass for Host Firewall policy

Vendor Cilium
Product cilium
Weakness CWE-362
Published August 15, 2024
Last update August 19, 2024

CVSS base score

6.8/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 15, 2024 CVE published
August 19, 2024 Record updated