Published on: Not Yet Published
Last Modified on: 03/24/2023 04:33:00 PM UTC
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.11.15, 1.12.8, and 1.13.1, under specific conditions, Cilium may misattribute the source IP address of traffic to a cluster, identifying external traffic as coming from the host on which Cilium is running. As a consequence, network policies for that cluster might be bypassed, depending on the specific network policies enabled. This issue only manifests when Cilium is routing IPv6 traffic and NodePorts are used to route traffic to pods. IPv6 and endpoint routes are both disabled by default. The problem has been fixed and is available on versions 1.11.15, 1.12.8, and 1.13.1. As a workaround, disable IPv6 routing.
- CVE-2023-27594 has been assigned by security-adviso[email protected] to track the vulnerability - currently rated as HIGH severity.
- Affected Vendor/Software: cilium - cilium version = < 1.11.15
- Affected Vendor/Software: cilium - cilium version = >= 1.12.0, < 1.12.8
- Affected Vendor/Software: cilium - cilium version = >= 1.13.0, < 1.13.1
CVSS3 Score: 7.3 - HIGH
|Release 1.11.15 · cilium/cilium · GitHub|| github.com |
|Potential network policy bypass when routing IPv6 traffic · Advisory · cilium/cilium · GitHub|| github.com |
|Release 1.13.1 · cilium/cilium · GitHub|| github.com |
|Release 1.12.8 · cilium/cilium · GitHub|| github.com |
Known Affected Configurations (CPE V2.3)