CVE-2023-40584 Denial of Service to Argo CD repo-server

What is CVE-2023-40584?

CVE-2023-40584 is a medium-severity denial of service vulnerability in Argoproj Argo Cd, published on 7 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Argo CD is a declarative continuous deployment for Kubernetes. All versions of ArgoCD starting from v2.4 have a bug where the ArgoCD repo-server component is vulnerable to a Denial-of-Service attack vector. Specifically, the said component extracts a user-controlled tar.gz file without validating the size of its inner files. As a result, a malicious, low-privileged user can send a malicious tar.gz file that exploits this vulnerability to the repo-server, thereby harming the system's functionality and availability. Additionally, the repo-server is susceptible to another vulnerability due to the fact that it does not check the extracted file permissions before attempting to delete them. Consequently, an attacker can craft a malicious tar.gz archive in a way that prevents the deletion of its inner files when the manifest generation process is completed. A patch for this vulnerability has been released in versions 2.6.15, 2.7.14, and 2.8.3. Users are advised to upgrade. The only way to completely resolve the issue is to upgrade, however users unable to upgrade should configure RBAC (Role-Based Access Control) and provide access for configuring applications only to a limited number of administrators. These administrators should utilize trusted and verified Helm charts.

Weakness: CWE-400

Which versions are affected by CVE-2023-40584?

9 open source packages ship an affected version, including github.com/argoproj/argo-cd/v2, argo-cd and github.com/argoproj/argo-cd. It affects 1 product.

Products include Argoproj Argo Cd.

How do I fix CVE-2023-40584?

Upgrade github.com/argoproj/argo-cd/v2 to a fixed version for your release line: 2.6.15, 2.7.14 or 2.8.3.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-40584 being exploited?

There is no known exploitation of CVE-2023-40584 in the wild and no public exploit code.

Other vulnerabilities in Argoproj Argo Cd

• CVE-2025-55190 Argo CD: Project API Token Exposes Repository Credentials Critical 10.0
• CVE-2022-29165 Argo CD will blindly trust JWT claims if anonymous access is enabled Critical 10.0
• CVE-2023-40029 Cluster secret might leak in cluster details page in Argo CD Critical 9.9
• CVE-2022-24768 Improper access control allows admin privilege escalation in Argo CD Critical 9.9
• CVE-2024-21652 Argo CD vulnerable to Bypassing of Brute Force Protection via Application Crash and In-Memory Data Loss Critical 9.8

All Argoproj Argo Cd vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-argo-cd-2023-40584, GHSA-g687-f2gx-6wm8, GO-2023-2050.