#VU100676 Improper Authorization in Spring Security - CVE-2024-38827

Vulnerability identifier: #VU100676

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-38827

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Spring Security
Server applications / Frameworks for developing and running applications

Vendor: VMware, Inc

Description

The vulnerability allows a remote attacker to bypass authorization.

The vulnerability exists due to presence of Locale dependent exceptions when using String.toLowerCase() and String.toUpperCase() for string comparison. A remote attacker can bypass authorization rules using specially crafted input.

Note, the vulnerability is related to #VU98795 (CVE-2024-38820).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Spring Security: 5.7.0 - 5.7.13, 5.8.0 - 5.8.15, 6.0.0 - 6.0.13, 6.1.0 - 6.1.11, 6.2.0 - 6.2.7, 6.3.0 - 6.3.4

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External links
https://spring.io/security/cve-2024-38827

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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.