#VU76251 Man-in-the-Middle (MitM) attack in SAML Single Sign On(SSO) - CVE-2023-32993

Vulnerability identifier: #VU76251

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-32993

CWE-ID: CWE-300

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SAML Single Sign On(SSO)
Web applications / Modules and components for CMS

Vendor: Jenkins

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the affected plugin does not perform hostname validation when connecting to miniOrange or the configured IdP to retrieve SAML metadata. A remote attacker can perform a man-in-the-middle attack to intercept these connections.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SAML Single Sign On(SSO): 1.0.6 - 2.0.2

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External links
https://jenkins.io/security/advisory/2023-05-16/

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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.