Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to versions 2.8.13, 2.9.9, and 2.10.4, an attacker can exploit a critical flaw in the application to initiate a Denial of Service (DoS) attack, rendering the application inoperable and affecting all users. The issue arises from unsafe manipulation of an array in a multi-threaded environment. The vulnerability is rooted in the application's code, where an array is being modified while it is being iterated over. This is a classic programming error but becomes critically unsafe when executed in a multi-threaded environment. When two threads interact with the same array simultaneously, the application crashes. This is a Denial of Service (DoS) vulnerability. Any attacker can crash the application continuously, making it impossible for legitimate users to access the service. The issue is exacerbated because it does not require authentication, widening the pool of potential attackers. Versions 2.8.13, 2.9.9, and 2.10.4 contain a patch for this issue.
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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2024-03-18T18:32:24.871Z

Updated: 2024-08-02T15:09:39.868Z

Reserved: 2023-12-29T16:10:20.367Z

Link: CVE-2024-21661

cve-icon Vulnrichment

Updated: 2024-08-02T15:09:27.847Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-03-18T19:15:06.687

Modified: 2024-11-21T08:54:49.030

Link: CVE-2024-21661

cve-icon Redhat

Severity : Important

Publid Date: 2024-03-18T00:00:00Z

Links: CVE-2024-21661 - Bugzilla