| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/argoproj/argo-cd | all versions | |
| github.com/argoproj/argo-cd/v2 | ≥ 2.4.0, < 2.6.15≥ 2.7.0, < 2.7.14≥ 2.8.0, < 2.8.3 | 2.6.152.7.142.8.3 |
| argo cd | ≥ 2.4.0, < 2.6.15≥ 2.7.0, < 2.7.14≥ 2.8.0, < 2.8.3 | 2.6.152.7.142.8.3 |
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 the following Argo CD versions:
The only way to completely resolve the issue is to upgrade.
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.
If you have any questions or comments about this advisory:
This vulnerability was found & reported by GE Vernova – Amit Laish.
The Argo team would like to thank these contributors for their responsible disclosure and constructive communications during the resolve of this issue
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