Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Versions starting with 2.5.0-rc1 and above, prior to 2.5.8, and version 2.6.0-rc4, are vulnerable to an authorization bypass bug which allows a malicious Argo CD user to deploy Applications outside the configured allowed namespaces. Reconciled Application namespaces are specified as a comma-delimited list of glob patterns. When sharding is enabled on the Application controller, it does not enforce that list of patterns when reconciling Applications. For example, if Application namespaces are configured to be argocd-*, the Application controller may reconcile an Application installed in a namespace called other, even though it does not start with argocd-. Reconciliation of the out-of-bounds Application is only triggered when the Application is updated, so the attacker must be able to cause an update operation on the Application resource. This bug only applies to users who have explicitly enabled the "apps-in-any-namespace" feature by setting `application.namespaces` in the argocd-cmd-params-cm ConfigMap or otherwise setting the `--application-namespaces` flags on the Application controller and API server components. The apps-in-any-namespace feature is in beta as of this Security Advisory's publish date. The bug is also limited to Argo CD instances where sharding is enabled by increasing the `replicas` count for the Application controller. Finally, the AppProjects' `sourceNamespaces` field acts as a secondary check against this exploit. To cause reconciliation of an Application in an out-of-bounds namespace, an AppProject must be available which permits Applications in the out-of-bounds namespace. A patch for this vulnerability has been released in versions 2.5.8 and 2.6.0-rc5. As a workaround, running only one replica of the Application controller will prevent exploitation of this bug. Making sure all AppProjects' sourceNamespaces are restricted within the confines of the configured Application namespaces will also prevent exploitation of this bug.
History

Wed, 07 Aug 2024 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Argoproj
Argoproj argo Cd
CPEs cpe:2.3:a:linuxfoundation:argo-cd:*:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:argo-cd:2.6.0:rc1:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:argo-cd:2.6.0:rc2:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:argo-cd:2.6.0:rc3:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:argo-cd:2.6.0:rc4:*:*:*:*:*:*
cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*
cpe:2.3:a:argoproj:argo_cd:2.6.0:rc1:*:*:*:*:*:*
cpe:2.3:a:argoproj:argo_cd:2.6.0:rc2:*:*:*:*:*:*
cpe:2.3:a:argoproj:argo_cd:2.6.0:rc3:*:*:*:*:*:*
cpe:2.3:a:argoproj:argo_cd:2.6.0:rc4:*:*:*:*:*:*
Vendors & Products Linuxfoundation
Linuxfoundation argo-cd
Argoproj
Argoproj argo Cd

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-01-26T03:35:27.309Z

Updated: 2024-08-02T10:13:50.215Z

Reserved: 2023-01-06T14:21:05.892Z

Link: CVE-2023-22736

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-01-26T21:18:13.110

Modified: 2024-11-21T07:45:19.477

Link: CVE-2023-22736

cve-icon Redhat

Severity : Important

Publid Date: 2023-01-25T00:00:00Z

Links: CVE-2023-22736 - Bugzilla