#VU75408 Security features bypass in Spring Security - CVE-2023-20862

Vulnerability identifier: #VU75408

Vulnerability risk: Medium

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

CVE-ID: CVE-2023-20862

CWE-ID: CWE-254

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 compromise the target system.

The vulnerability exists due to the logout support does not properly clean the security context if using serialized versions. A remote attacker can save an empty security context to the HttpSessionSecurityContextRepository and keep users authenticated even after they performed logout.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Spring Security: 5.7.0 - 5.7.7, 5.8.0 - 5.8.2, 6.0.0 - 6.0.2

---

External links
https://spring.io/security/cve-2023-20862

---

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.