CVE-2024-42488

MEDIUM

Cilium agent's race condition may lead to policy bypass for Host Firewall policy

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2024-42488 has a selected CVSS score of 6.8 (medium).

Description

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.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactPartial

CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 19, 2024 · Source: CVE List

Affected products and versions

2
ProductSourceVersion range

cilium

Browse cilium / cilium
CVE List< 1.14.14affected
>= 1.15.0, < 1.15.8affected

github.com/cilium/cilium

Browse Go / github.com/cilium/cilium
GitHub AdvisoryBefore 1.14.14 · Fixed in 1.14.14affected
1.15.0 to < 1.15.8 · Fixed in 1.15.8affected

References

7