Vulnerability · Published Aug 16, 2024 · Assigned by GitHub_M
CVE-2024-42486Cilium vulnerable to information leakage via incorrect ReferenceGrant update logic in Gateway API
Medium 5.4
In plain English
A medium-severity information exposure in cilium from cilium. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. In versions on the 1.15.x branch prior to 1.15.8 and the 1.16.x branch prior to 1.16.1, ReferenceGrant changes are not correctly propagated in Cilium's GatewayAPI controller, which could lead to Gateway resources being able to access secrets for longer than intended, or to Routes having the ability to forward traffic to backends in other namespaces for longer than intended. This issue has been patched in Cilium v1.15.8 and v1.16.1. As a workaround, any modification of a related Gateway/HTTPRoute/GRPCRoute/TCPRoute CRD (for example, adding any label to any of these resources) will trigger a reconciliation of ReferenceGrants on an affected cluster.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/cilium/cilium | 1.16.1 | GHSA-vwf8-q6fw-4wcm |
| Go | github.com/cilium/cilium | 1.15.8 | GHSA-vwf8-q6fw-4wcm |
| Go | github.com/cilium/cilium | 1.15.8, 1.16.1 | GO-2024-3074 |
Affected products (as reported)
Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
References
- https://github.com/cilium/cilium/security/advisories/GHSA-vwf8-q6fw-4wcm x_refsource_CONFIRM
- https://github.com/cilium/cilium/pull/34032 x_refsource_MISC
- https://github.com/cilium/cilium/commit/ed3dfa0aab8b80f7e841a6d49d2a990ac2dca053 x_refsource_MISC