CVE-2024-42488

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

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.

Category

6.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: cilium cilium
Published at:
Updated at:

References

Link Tags
https://github.com/cilium/cilium/security/advisories/GHSA-q7w8-72mr-vpgw third party advisory patch
https://github.com/cilium/cilium/pull/33511 third party advisory patch
https://github.com/cilium/cilium/commit/aa44dd148a9be95e07782e4f990e61678ef0abf8 patch

Frequently Asked Questions

What is the severity of CVE-2024-42488?
CVE-2024-42488 has been scored as a medium severity vulnerability.
How to fix CVE-2024-42488?
To fix CVE-2024-42488, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-42488 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-42488 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-42488?
CVE-2024-42488 affects cilium cilium.
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