GHSA-g687-f2gx-6wm8

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GHSA-g687-f2gx-6wm8

Summary: Argo CD repo-server Denial of Service vulnerability

Details: ### Impact 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. ### Patches A patch for this vulnerability has been released in the following Argo CD versions: * v2.6.15 * v2.7.14 * v2.8.3 ### Workarounds The only way to completely resolve the issue is to upgrade. #### Mitigations 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. ### For more information If you have any questions or comments about this advisory: * Open an issue in [the Argo CD issue tracker](https://github.com/argoproj/argo-cd/issues) or [discussions](https://github.com/argoproj/argo-cd/discussions) * Join us on [Slack](https://argoproj.github.io/community/join-slack) in channel #argo-cd ### Credits 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

References: https://github.com/argoproj/argo-cd/security/advisories/GHSA-g687-f2gx-6wm8, https://nvd.nist.gov/vuln/detail/CVE-2023-40584, https://github.com/argoproj/argo-cd/commit/1391ba72149655e4884d357586d3201f15bc92dc, https://github.com/argoproj/argo-cd/commit/b8f92c4ff226346624f43de3f25d81dac6386674, https://github.com/argoproj/argo-cd, https://github.com/argoproj/argo-cd/releases/tag/v2.6.15, https://github.com/argoproj/argo-cd/releases/tag/v2.7.14, https://github.com/argoproj/argo-cd/releases/tag/v2.8.3