CVE-2024-42488: medium-severity vulnerability in cilium
Cilium agent's race condition may lead to policy bypass for Host Firewall policy
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.5%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Affected products
cilium · ciliumRelated CVEs — cilium
In the same product, most dangerous first.
CVE-2023-27595MEDIUMCilium eBPF filters may be temporarily removed during agent restartEPSS 0.7%CVE-2023-30851LOWPotential HTTP policy bypass when using header rules in CiliumEPSS 0.7%CVE-2024-28248HIGHCilium intermittent HTTP policy bypassEPSS 0.6%CVE-2024-42486MEDIUMCilium vulnerable to information leakage via incorrect ReferenceGrant update logic in Gateway APIEPSS 0.6%CVE-2023-39347HIGHCilium NetworkPolicy bypass via pod labelsEPSS 0.6%CVE-2023-27594MEDIUMCilium vulnerable to potential network policy bypass when routing IPv6 traffic EPSS 0.6%