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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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
Vulnrichment
Updated: 2024-08-02T15:09:27.847Z
NVD
Status : Awaiting Analysis
Published: 2024-03-18T19:15:06.687
Modified: 2024-03-18T19:40:00.173
Link: CVE-2024-21661
Redhat