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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities
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CVE-2023-27593 Detail

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.


View Analysis Description

Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/cilium/cilium/pull/24075 Third Party Advisory 
https://github.com/cilium/cilium/releases/tag/v1.11.15 Third Party Advisory 
https://github.com/cilium/cilium/releases/tag/v1.12.8 Third Party Advisory 
https://github.com/cilium/cilium/releases/tag/v1.13.1 Third Party Advisory 
https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx Third Party Advisory 
https://kubernetes.io/docs/reference/access-authn-authz/rbac/ Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-276 Incorrect Default Permissions GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-27593
NVD Published Date:
03/17/2023
NVD Last Modified:
11/06/2023
Source:
GitHub, Inc.