5.3

CVSS Score

3.1

Basic Information

CVE ID

CVE-2022-41354

GHSA ID

GHSA-2q5c-qw9c-fmvq

EPSS Score

0.82024%

CWE

CWE-203

Published

3/23/2023

Updated

4/4/2023

KEV Status

Technology

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CVE-2022-41354

CVE-2022-41354: Argo CD authenticated but unauthorized users may enumerate Application names via the API

Impact

All versions of Argo CD starting with v0.5.0 are vulnerable to an information disclosure bug allowing unauthorized users to enumerate application names by inspecting API error messages. An attacker could use the discovered application names as the starting point of another attack. For example, the attacker might use their knowledge of an application name to convince an administrator to grant higher privileges (social engineering).

Many Argo CD API endpoints accept an application name as the only parameter. Since Argo CD RBAC requires both the application name and its configured project name (and, if apps-in-any-namespace is enabled, the application's namespace), Argo CD fetches the requested application before performing the RBAC check. If the application does not exist, the API returns a "not found". If the application does exist, and the user does not have access, the API returns an "unauthorized" error. By trial and error, an attacker can infer which applications exist and which do not.

Note that application resources are not fetched for API calls from unauthenticated users. If your Argo CD instance is accessible from the public internet, unauthenticated users will not be able to cause Argo CD to make Kubernetes API calls.

The patch changes API behavior to return "unauthorized" both when the application is missing and when the user is not authorized to access it. This change in API behavior may impact API clients. Check your code to make sure it will handle the new API behavior properly.

Patches

A patch for this vulnerability has been released in the following Argo CD versions:

v2.6.7
v2.5.16
v2.4.28

Workarounds

There are no workarounds besides upgrading.

Credits

Thank you to bean.zhang of HIT-IDS ChunkL Team who discovered the issue and reported it confidentially according to our guidelines.

For more information

Open an issue in the Argo CD issue tracker or discussions
Join us on Slack in channel #argo-cd

(GitHub Advisory)

5.3

CVSS Score

3.1

Basic Information

CVE ID

CVE-2022-41354

GHSA ID

GHSA-2q5c-qw9c-fmvq

EPSS Score

0.82024%

CWE

CWE-203

Published

3/23/2023

Updated

4/4/2023

KEV Status

Technology

Technical Details

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
github.com/argoproj/argo-cd	go	>= 0.5.0, <= 1.8.7
github.com/argoproj/argo-cd/v2	go	>= 2.5.0, < 2.5.16	2.5.16
github.com/argoproj/argo-cd/v2	go	>= 2.6.0, < 2.6.7	2.6.7
github.com/argoproj/argo-cd/v2	go	< 2.4.28	2.4.28

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stemmed from multiple API endpoints that checked application existence before performing RBAC authorization. The original implementations in server/application/application.go directly fetched application resources using appLister.Applications().Get() or appclientset.Get(), returning 'not found' errors for non-existent applications. This allowed attackers to distinguish between non-existent applications (404) and unauthorized access to existing ones (403). The patched code introduced centralized RBAC-enforced checks (getAppEnforceRBAC/getApplicationEnforceRBAC*) that return uniform 'permission denied' errors regardless of application existence, but the pre-patch versions of these handler functions contained the vulnerable pattern.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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5.3

Basic Information

Concerned about an active attack path?

CVE-2022-41354: Argo CD authenticated but unauthorized users may enumerate Application names via the API

Impact

Patches

Workarounds

Credits

For more information

5.3

Basic Information

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability Intelligence
Miggo AI