#VU75561 Input validation error in Pivotal Spring Framework - CVE-2023-20860

Vulnerability identifier: #VU75561

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:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-20860

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: Pivotal

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an input validation error caused by using the wildcard ("**") as a pattern in Spring Security configuration with the mvcRequestMatcher, which creates a mismatch in pattern matching between Spring Security and Spring MVC. A remote attacker can bypass certain security restrictions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Pivotal Spring Framework: 5.3.0 RC1 - 5.3.25, 6.0.0-M1 - 6.0.6

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External links
https://spring.io/security/cve-2023-20860

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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.