CVE-2023-34242: Cilium is a networking, observability, and security solution..
cilium
•
Jun 15, 2023
•
Jul 3, 2023
Description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to version 1.13.4, when Gateway API is enabled in Cilium, the absence of a check on the namespace in which a ReferenceGrant is created could result in Cilium unintentionally gaining visibility of secrets (including certificates) and services across namespaces. An attacker on an affected cluster can leverage this issue to use cluster secrets that should not be visible to them, or communicate with services that they should not have access to. Gateway API functionality is disabled by default. This vulnerability is fixed in Cilium release 1.13.4. As a workaround, restrict the creation of `ReferenceGrant` resources to admin users by using Kubernetes RBAC.
Products affected:
cilium» cilium » *
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Severity
5.3
/
10
CVSS base metrics
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
LOW
User interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Exploitability Score
3.9
Impact Score
1.4
Weakness
CWE-200__
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