East-west traffic not subject to egress policy enforcement for requests via Gateway API load balancers
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.16.8, 1.17.2, 1.15.15
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. For Cilium users who use Gateway API for Ingress for some services and use LB-IPAM or BGP for LB Service implementation and use network policies to block egress traffic from workloads in a namespace to workloads in other namespaces, egress traffic from workloads covered by such network policies to LoadBalancers configured by `Gateway` resources will incorrectly be allowed. LoadBalancer resources not deployed via a Gateway API configuration are not affected by this issue. This issue affects: Cilium v1.15 between v1.15.0 and v1.15.14 inclusive, v1.16 between v1.16.0 and v1.16.7 inclusive, and v1.17 between v1.17.0 and v1.17.1 inclusive. This issue is fixed in Cilium v1.15.15, v1.16.8, and v1.17.2. A Clusterwide Cilium Network Policy can be used to work around this issue for users who are unable to upgrade.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- cilium cilium
From 1.16.0 · fixed in 1.16.8; From 1.17.0 · fixed in 1.17.2; From 1.15.0 · fixed in 1.15.15
- github.com/cilium/ciliumGo
From 1.15.0 · fixed in 1.15.15; From 1.16.0 · fixed in 1.16.8; From 1.17.0 · fixed in 1.17.2
- github.com/cilium/ciliumGo
From 1.16.0 · fixed in 1.16.8
- github.com/cilium/ciliumGo
From 1.17.0 · fixed in 1.17.2
- github.com/cilium/ciliumGo
From 1.15.0 · fixed in 1.15.15