Vulnerability identifier: #VU51534

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-26921

CWE-ID: CWE-613

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Argo CD
Web applications / Modules and components for CMS

Vendor: Argo

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient session expiration issue in util/session/sessionmanager.go. A remote attacker can obtain or guess session token and gain unauthorized access to session that belongs to another user.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Argo CD: 1.7.0 - 1.7.11, 1.8.0 - 1.8.3

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External links
http://github.com/argoproj/argo-cd/commit/f5b0db240b4e3abf18e97f6fd99096b4f9e94dc5
http://github.com/argoproj/argo-cd/compare/v1.8.3...v1.8.4
http://github.com/argoproj/argo-cd/security/advisories/GHSA-9h6w-j7w4-jr52

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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.