Type Confusion in argo-cd

1) Type Confusion

EUVDB-ID: #VU61046

Risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2021-23820

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error. A remote attacker can pass specially crafted data to the application, trigger a type confusion error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Argo CD: 0.1.0 - 2.2.6

CPE2.3

• cpe:2.3:a:argo:argo-cd:0.12.3:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:argo:argo-cd:0.2.0:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:argo:argo-cd:0.3.3:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:argo:argo-cd:0.4.7:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:argo:argo-cd:0.5.4:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:argo:argo-cd:0.6.2:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:argo:argo-cd:0.7.2:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:argo:argo-cd:0.8.2:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:argo:argo-cd:0.9.2:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:argo:argo-cd:1.0.2:*:*:*:*:kubernetes:*:*

External links

https://github.com/argoproj/argo-cd/releases/tag/v2.3.0

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.