argoproj argo-cd up to 2.9.19/2.10.14/2.11.5 /api/webhook resource consumption

Summaryinfo

A vulnerability, which was classified as problematic, was found in argoproj argo-cd up to 2.9.19/2.10.14/2.11.5. The impacted element is an unknown function of the file /api/webhook. Such manipulation leads to resource consumption. This vulnerability is documented as CVE-2024-40634. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in argoproj argo-cd up to 2.9.19/2.10.14/2.11.5 and classified as critical. Affected by this issue is some unknown functionality of the file /api/webhook. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. This report details a security vulnerability in Argo CD, where an unauthenticated attacker can send a specially crafted large JSON payload to the /api/webhook endpoint, causing excessive memory allocation that leads to service disruption by triggering an Out Of Memory (OOM) kill. The issue poses a high risk to the availability of Argo CD deployments. This vulnerability is fixed in 2.11.6, 2.10.15, and 2.9.20.

The advisory is available at github.com. This vulnerability is handled as CVE-2024-40634 since 07/08/2024. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 2.9.20, 2.10.15 or 2.11.6 eliminates this vulnerability. Applying the patch 46c0c0b64deaab1ece70cb701030b76668ad0cdc is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• argoproj

Name

• argo-cd

Version

• 2.9.0
• 2.9.1
• 2.9.2
• 2.9.3
• 2.9.4
• 2.9.5
• 2.9.6
• 2.9.7
• 2.9.8
• 2.9.9
• 2.9.10
• 2.9.11
• 2.9.12
• 2.9.13
• 2.9.14
• 2.9.15
• 2.9.16
• 2.9.17
• 2.9.18
• 2.9.19
• 2.10.0
• 2.10.1
• 2.10.2
• 2.10.3
• 2.10.4
• 2.10.5
• 2.10.6
• 2.10.7
• 2.10.8
• 2.10.9
• 2.10.10
• 2.10.11
• 2.10.12
• 2.10.13
• 2.10.14
• 2.11.0
• 2.11.1
• 2.11.2
• 2.11.3
• 2.11.4
• 2.11.5

License

• open-source

Website

• Product: https://github.com/argoproj/argo-cd/

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