CVE-2024-42488 Cilium agent's race condition may lead to policy bypass for Host Firewall policy
A race condition in Cilium agent allows attackers to bypass Host Firewall policies by causing the agent to ignore node labels.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-42488?
CVE-2024-42488 is a medium-severity vulnerability in cilium, published on 15 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-362
Which versions are affected by CVE-2024-42488?
8 open source packages ship an affected version, including github.com/cilium/cilium, cilium and cilium-operator. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/cilium/cilium Go | All versions | 1.14.14, 1.15.8 |
github.com/cilium/cilium Go | All versions | 1.14.14 |
github.com/cilium/cilium Go | All versions | 1.14.14 |
github.com/cilium/cilium Go | From 1.15.0 | 1.15.8 |
github.com/cilium/cilium Go | From 1.15.0 | 1.15.8 |
cilium Bitnami | From 1.15.4 | 1.16.0 |
2 more packages
cilium-operator Bitnami | From 1.15.4 | 1.16.0 |
hubble-relay Bitnami | All versions | 1.16.0 |
Products include Cilium Cilium.
How do I fix CVE-2024-42488?
Upgrade github.com/cilium/cilium to a fixed version for your release line: 1.14.14 or 1.15.8.
Is CVE-2024-42488 being exploited?
There is no known exploitation of CVE-2024-42488 in the wild and no public exploit code.
Other vulnerabilities in cilium
- CVE-2026-49445 Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access
- CVE-2022-29178 Incorrect Default Permissions in Cilium
- CVE-2024-28860 Insecure IPsec transport encryption in Cilium
- CVE-2026-41520 Cillium exposes sensitive information included in the cilium-bugtool debug archive
- CVE-2024-37307 Cilium leaks sensitive information in cilium-bugtool
Sources
Also known as BIT-cilium-2024-42488, BIT-cilium-operator-2024-42488, BIT-hubble-relay-2024-42488, GHSA-q7w8-72mr-vpgw, GO-2024-3072.