PKCE downgrade in Spring Authorization Server



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-22258
CWE-ID CWE-287
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Spring Authorization Server
Server applications / Directory software, identity management

Vendor Spring

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Authentication

EUVDB-ID: #VU87654

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 - Improper Authentication

Exploit availability: No

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 - 1.2.2

CPE2.3 External links

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


Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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