CVE - CVE-2023-41333

CVE-ID
CVE-2023-41333	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in other namespaces. By using a crafted `endpointSelector` that uses the `DoesNotExist` operator on the `reserved:init` label, the attacker can create policies that bypass namespace restrictions and affect the entire Cilium cluster. This includes potentially allowing or denying all traffic. This attack requires API server access, as described in the Kubernetes API Server Attacker section of the Cilium Threat Model. This issue has been resolved in Cilium versions 1.14.2, 1.13.7, and 1.12.14. As a workaround an admission webhook can be used to prevent the use of `endpointSelectors` that use the `DoesNotExist` operator on the `reserved:init` label in CiliumNetworkPolicies.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://docs.cilium.io/en/stable/security/threat-model/#kubernetes-api-server-attacker URL:https://docs.cilium.io/en/stable/security/threat-model/#kubernetes-api-server-attacker MISC:https://github.com/cilium/cilium/pull/28007 URL:https://github.com/cilium/cilium/pull/28007 MISC:https://github.com/cilium/cilium/security/advisories/GHSA-4xp2-w642-7mcx URL:https://github.com/cilium/cilium/security/advisories/GHSA-4xp2-w642-7mcx
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20230828	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20230828)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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