Denial of service in Spring Boot welcome page

1) Resource management error

EUVDB-ID: #VU76427

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-20883

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the application. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Specifically, an application is vulnerable if all of the conditions are true:

• The application has Spring MVC auto-configuration enabled. This is the case by default if Spring MVC is on the classpath.
• The application makes use of Spring Boot's welcome page support, either static or templated.
• Your application is deployed behind a proxy which caches 404 responses.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Spring Boot: 2.5.0 - 3.0.6

CPE2.3

• cpe:2.3:a:spring:spring-boot:2.5.14:*:*:*:*:*:*:*
• cpe:2.3:a:spring:spring-boot:2.6.14:*:*:*:*:*:*:*
• cpe:2.3:a:spring:spring-boot:2.7.11:*:*:*:*:*:*:*
• cpe:2.3:a:spring:spring-boot:3.0.6:*:*:*:*:*:*:*

External links

https://spring.io/security/cve-2023-20883

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.