CVE-2024-52529 Layer 7 policy enforcement may not occur in policies with wildcarded port ranges in Cilium
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2024-52529?
CVE-2024-52529 is a medium-severity vulnerability in cilium, published on 25 Nov 2024.
Official description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. For users with the following configuration: 1. An allow policy that selects a Layer 3 destination and a port range `AND` 2. A Layer 7 allow policy that selects a specific port within the first policy's range the Layer 7 enforcement would not occur for the traffic selected by the Layer 7 policy. This issue only affects users who use Cilium's port range functionality, which was introduced in Cilium v1.16. This issue is patched in PR #35150. This issue affects Cilium v1.16 between v1.16.0 and v1.16.3 inclusive. This issue is patched in Cilium v1.16.4. Users are advised to upgrade. Users with network policies that match the pattern described above can work around the issue by rewriting any policies that use port ranges to individually specify the ports permitted for traffic.
Weakness: CWE-755
Which versions are affected by CVE-2024-52529?
6 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 | From 1.16.0 | 1.16.4 |
github.com/cilium/cilium Go | From 1.16.0 | 1.16.4 |
github.com/cilium/cilium Go | From 1.16.0 | 1.16.4 |
cilium Bitnami | From 1.16.0 | 1.16.4 |
cilium-operator Bitnami | From 1.16.0 | 1.16.4 |
hubble-relay Bitnami | From 1.16.0 | 1.16.4 |
Products include Cilium Cilium.
How do I fix CVE-2024-52529?
Upgrade github.com/cilium/cilium to 1.16.4 or later.
Is CVE-2024-52529 being exploited?
There is no known exploitation of CVE-2024-52529 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-2024-52529, BIT-cilium-operator-2024-52529, BIT-hubble-relay-2024-52529, GHSA-xg58-75qf-9r67, GO-2024-3290.