Exploit Report

Computer Security And Bug Information

CVE-2023-27593

CVECVE-2023-27593
CVE Title
Published Date2023-03-17T20:15Z
Modified Date2023-03-24T16:29Z
CWE TypeCWE-276
CVSS 3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
DescriptionCilium 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.
References
By clicking these links you will leave this website. We do not endorse and will not be held accountable for any activity on external sites.
Reference URLhttps://github.com/cilium/cilium/releases/tag/v1.13.1
Reference DescriptionMISC https://github.com/cilium/cilium/releases/tag/v1.13.1
Reference URLhttps://github.com/cilium/cilium/pull/24075
Reference DescriptionMISC https://github.com/cilium/cilium/pull/24075
Reference URLhttps://github.com/cilium/cilium/releases/tag/v1.11.15
Reference DescriptionMISC https://github.com/cilium/cilium/releases/tag/v1.11.15
Reference URLhttps://kubernetes.io/docs/reference/access-authn-authz/rbac/
Reference DescriptionMISC https://kubernetes.io/docs/reference/access-authn-authz/rbac/
Reference URLhttps://github.com/cilium/cilium/releases/tag/v1.12.8
Reference DescriptionMISC https://github.com/cilium/cilium/releases/tag/v1.12.8
TagsThird Party Advisory
Sources NIST MITRE

This site's data is aggregated programmatically and provided "as is" without any representations or warranties, express or implied. Exploit.report is not affiliated with the The MITRE Corporation, U.S. Department of Homeland Security (DHS), Cybersecurity and Infrastructure Security Agency (CISA), or US government in any way. CVE and the CVE logo are registered trademarks of The MITRE Corporation

© 2022 Exploit.Report | Data | Contact | Privacy Policy | Articles