Information disclosure in Argoproj Argo-Cd
CVE-2023-40029
Argo CD is a declarative continuous deployment for Kubernetes. Argo CD Cluster secrets might be managed declaratively using Argo CD / kubectl apply. As a result, the full secret body is stored in`kubectl.kubernetes.io/last-applied-configuration` annotation. pull request #7139 introduced the ability to manage cluster labels and annotations. Since clusters are stored as secrets it also exposes the `kubectl.kubernetes.io/last-applied-configuration` annotation which includes full secret body. In order to view the cluster annotations via the Argo CD API, the user must have `clusters, get` RBAC access. **Note:** In many cases, cluster secrets do not contain any actually-secret information. But sometimes, as in bearer-token auth, the contents might be very sensitive. The bug has been patched in versions 2.8.3, 2.7.14, and 2.6.15. Users are advised to upgrade. Users unable to upgrade should update/deploy cluster secret with `server-side-apply` flag which does not use or rely on `kubectl.kubernetes.io/last-applied-configuration` annotation. Note: annotation for existing secrets will require manual removal.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.012 (67.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Argoproj Argo-Cd — versions >= 2.2.0, < 2.6.15, >= 2.7.0, < 2.7.14, >= 2.8.0, < 2.8.3
- Argoproj Argo Cd
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/argoproj/argo-cd/security/advisories/GHSA-fwr2-64vr-xv9m (Exploit, Vendor Advisory)
- github.com/argoproj/argo-cd/pull/7139 (Patch, Vendor Advisory)
- github.com/argoproj/argo-cd/commit/4b2e5b06bff2ffd8ed1970654ddd8e55fc4a41c4 (Patch)
Frequently asked questions
- What is CVE-2023-40029?
- CVE-2023-40029 is a critical-severity vulnerability in Argoproj Argo-Cd, classified under Information Disclosure. CVSS score: 9.9/10. Published 2023-09-07.
- How severe is CVE-2023-40029?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2023-40029 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.