CVE-2023-32993 Jenkins SAML Single Sign On(SSO) Plugin missing hostname validation

Medium 4.8 Published 16 May 2023 Updated 23 Jan 2025

Attackers can intercept SAML metadata connections via man-in-the-middle attacks due to missing hostname validation in the Jenkins SAML SSO Plugin.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2023-32993?

CVE-2023-32993 is a medium-severity vulnerability in Jenkins SAML Single Sign On(SSO) Plugin, published on 16 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Jenkins SAML Single Sign On(SSO) Plugin 2.0.2 and earlier does not perform hostname validation when connecting to miniOrange or the configured IdP to retrieve SAML metadata, which could be abused using a man-in-the-middle attack to intercept these connections.

Weakness: CWE-345, CWE-346

Which versions are affected by CVE-2023-32993?

2 open source packages ship an affected version, including io.jenkins.plugins:miniorange-saml-sp. It affects 1 product.

Package	Affected	Fixed in
`io.jenkins.plugins:miniorange-saml-sp` Maven	All versions	`2.1.0`
`io.jenkins.plugins:miniorange-saml-sp` Maven	All versions	`2.1.0`

Products include Jenkins Saml Single Sign On.

How do I fix CVE-2023-32993?

Upgrade io.jenkins.plugins:miniorange-saml-sp to 2.1.0 or later.

Is CVE-2023-32993 being exploited?

There is no known exploitation of CVE-2023-32993 in the wild and no public exploit code.

Sources

Also known as GHSA-6v6h-rw43-97fh.