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CVE-2023-27593
Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
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, an attacker with access to a Cilium agent pod can write to `/opt/cni/bin` due to a `hostPath` mount of that directory in the agent pod. By replacing the CNI binary with their own malicious binary and waiting for the creation of a new pod on the node, the attacker can gain access to the underlying node.
The issue has been fixed and the fix is available on versions 1.11.15, 1.12.8, and 1.13.1. Some workarounds are available. Kubernetes RBAC should be used to deny users and service accounts `exec` access to Cilium agent pods. In cases where a user requires `exec` access to Cilium agent pods, but should not have access to the underlying node, no workaround is possible.
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, an attacker with access to a Cilium agent pod can write to `/opt/cni/bin` due to a `hostPath` mount of that directory in the agent pod. By replacing the CNI binary with their own malicious binary and waiting for the creation of a new pod on the node, the attacker can gain access to the underlying node. The issue has been fixed and the fix is available on versions 1.11.15, 1.12.8, and 1.13.1. Some workarounds are available. Kubernetes RBAC should be used to deny users and service accounts `exec` access to Cilium agent pods. In cases where a user requires `exec` access to Cilium agent pods, but should not have access to the underlying node, no workaround is possible.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.
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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, an attacker with access to a Cilium agent pod can write to `/opt/cni/bin` due to a `hostPath` mount of that directory in the agent pod. By replacing the CNI binary with their own malicious binary and waiting for the creation of a new pod on the node, the attacker can gain access to the underlying node. The issue has been fixed and the fix is available on versi
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, an attacker with access to a Cilium agent pod can write to `/opt/cni/bin` due to a `hostPath` mount of that directory in the agent pod. By replacing the CNI binary with their own malicious binary and waiting for the creation of a new pod on the node, the attacker can gain access to the underlying node.
The issue has been fixed and the fix is available on vers
Initial Analysis by NIST3/24/2023 12:29:49 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* versions up to (excluding) 1.11.15
*cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* versions from (including) 1.12.0 up to (excluding) 1.12.8
*cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* versions from (including) 1.13.0 up to (excluding) 1.13.1
Added
CVSS V3.1
NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Changed
Reference Type
https://github.com/cilium/cilium/pull/24075 No Types Assigned
https://github.com/cilium/cilium/pull/24075 Third Party Advisory
Changed
Reference Type
https://github.com/cilium/cilium/releases/tag/v1.11.15 No Types Assigned
https://github.com/cilium/cilium/releases/tag/v1.11.15 Third Party Advisory
Changed
Reference Type
https://github.com/cilium/cilium/releases/tag/v1.12.8 No Types Assigned
https://github.com/cilium/cilium/releases/tag/v1.12.8 Third Party Advisory
Changed
Reference Type
https://github.com/cilium/cilium/releases/tag/v1.13.1 No Types Assigned
https://github.com/cilium/cilium/releases/tag/v1.13.1 Third Party Advisory
Changed
Reference Type
https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx No Types Assigned
https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx Third Party Advisory
Changed
Reference Type
https://kubernetes.io/docs/reference/access-authn-authz/rbac/ No Types Assigned
https://kubernetes.io/docs/reference/access-authn-authz/rbac/ Third Party Advisory
Quick Info
CVE Dictionary Entry: CVE-2023-27593 NVD
Published Date: 03/17/2023 NVD
Last Modified: 11/06/2023
Source: GitHub, Inc.
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