Current Description

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Argo CD starting with 2.3.0 and prior to 2.3.6 and 2.4.5 is vulnerable to a cross-site scripting (XSS) bug which could allow an attacker to inject arbitrary JavaScript in the `/auth/callback` page in a victim's browser. This vulnerability only affects Argo CD instances which have single sign on (SSO) enabled. The exploit also assumes the attacker has 1) access to the API server's encryption key, 2) a method to add a cookie to the victim's browser, and 3) the ability to convince the victim to visit a malicious `/auth/callback` link. The vulnerability is classified as low severity because access to the API server's encryption key already grants a high level of access. Exploiting the XSS would allow the attacker to impersonate the victim, but would not grant any privileges which the attacker could not otherwise gain using the encryption key. A patch for this vulnerability has been released in the following Argo CD versions 2.4.5 and 2.3.6. There is currently no known workaround.

View Analysis Description

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  6.1 MEDIUM

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

CNA:  GitHub, Inc.

Base Score:  2.6 LOW

Vector:  CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:N

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score:  4.3 MEDIUM

Vector:  (AV:N/AC:M/Au:N/C:N/I:P/A:N)

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://github.com/argoproj/argo-cd/releases/tag/v2.3.6	Release Notes  Third Party Advisory
https://github.com/argoproj/argo-cd/releases/tag/v2.4.5	Release Notes  Third Party Advisory
https://github.com/argoproj/argo-cd/security/advisories/GHSA-pmjg-52h9-72qv	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	GitHub, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Initial Analysis 7/20/2022 11:46:57 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR *cpe:2.3:a:linuxfoundation:argo-cd:*:*:*:*:*:*:*:* versions from (including) 2.3.0 up to (excluding) 2.3.6 *cpe:2.3:a:linuxfoundation:argo-cd:*:*:*:*:*:*:*:* versions from (including) 2.4.0 up to (excluding) 2.4.5
Added	CVSS V2		NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Added	CVSS V2 Metadata		Victim must voluntarily interact with attack mechanism
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Changed	Reference Type	https://github.com/argoproj/argo-cd/releases/tag/v2.3.6 No Types Assigned	https://github.com/argoproj/argo-cd/releases/tag/v2.3.6 Release Notes, Third Party Advisory
Changed	Reference Type	https://github.com/argoproj/argo-cd/releases/tag/v2.4.5 No Types Assigned	https://github.com/argoproj/argo-cd/releases/tag/v2.4.5 Release Notes, Third Party Advisory
Changed	Reference Type	https://github.com/argoproj/argo-cd/security/advisories/GHSA-pmjg-52h9-72qv No Types Assigned	https://github.com/argoproj/argo-cd/security/advisories/GHSA-pmjg-52h9-72qv Third Party Advisory