Vulnerability identifier: #VU75562

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-20861

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 perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of SpEL expressions. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Pivotal Spring Framework: 6.0.0 - 6.0.6, 5.3.0 - 5.3.25, 5.2.0 - 5.2.22

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External links
http://spring.io/security/cve-2023-20861

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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.