#VU87654 Improper Authentication in Spring Authorization Server - CVE-2024-22258

Vulnerability identifier: #VU87654

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-22258

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Spring Authorization Server
Server applications / Directory software, identity management

Vendor: Spring

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to PKCE downgrade when a Confidential Client uses PKCE for the Authorization Code Grant. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Spring Authorization Server: 0.0.1 - 0.0.3, 0.1.0 - 0.1.2, 0.2.0 - 0.2.3, 0.3.0 - 0.3.1, 0.4.0 - 0.4.5, 1.0.0 - 1.0.5, 1.1.0 - 1.1.5, 1.2.0 - 1.2.2

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External links
https://spring.io/security/cve-2024-22258

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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.