Argo CD 2.32.6.2 Improper Auth: Secret Escalation Vulnerability
CVE-2023-23947 Published on February 16, 2023
Argo CD users with any cluster secret update access may update out-of-bounds cluster secrets
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. All Argo CD versions starting with 2.3.0-rc1 and prior to 2.3.17, 2.4.23 2.5.11, and 2.6.2 are vulnerable to an improper authorization bug which allows users who have the ability to update at least one cluster secret to update any cluster secret. The attacker could use this access to escalate privileges (potentially controlling Kubernetes resources) or to break Argo CD functionality (by preventing connections to external clusters). A patch for this vulnerability has been released in Argo CD versions 2.6.2, 2.5.11, 2.4.23, and 2.3.17. Two workarounds are available. Either modify the RBAC configuration to completely revoke all `clusters, update` access, or use the `destinations` and `clusterResourceWhitelist` fields to apply similar restrictions as the `namespaces` and `clusterResources` fields.
Vulnerability Analysis
CVE-2023-23947 can be exploited with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is an AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2023-23947 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2023-23947
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Affected Versions
argoproj argo-cd:- Version >= 2.3.0-rc1, < 2.3.17 is affected.
- Version >= 2.4.0, < 2.4.23 is affected.
- Version >= 2.5.0, < 2.5.11 is affected.
- Version >= 2.6.0, < 2.6.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.