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OpenAdvisories
Medium · 6.8 CVE-2024-42488 BIT-cilium-2024-42488BIT-cilium-operator-2024-42488BIT-hubble-relay-2024-42488EUVD-2024-2630GHSA-q7w8-72mr-vpgwGO-2024-3072

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

Published Aug 15, 2024 · Updated Aug 19, 2024 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
cilium cilium < 1.14.14, >= 1.15.0, < 1.15.8 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling hubble 1.16.0-r0 —
Wolfi rolling hubble-ui +1 0.13.1-r5 —

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/cilium/cilium < 1.14.14 1.14.14 GHSA-q7w8-72mr-vpgw
Go github.com/cilium/cilium >= 1.15.0, < 1.15.8 1.15.8 GHSA-q7w8-72mr-vpgw
Go github.com/cilium/cilium < 1.14.14 · >= 1.15.0, < 1.15.8 1.14.14, 1.15.8 GO-2024-3072

References