CVE-2019-3872 Cross-site scripting in picketlink

Medium 5.4 Published Updated

An attacker can inject malicious scripts via SAML requests in JBoss Application Platform to achieve cross-site scripting and steal information.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2019-3872?

CVE-2019-3872 is a medium-severity cross-site scripting vulnerability in Redhat Jboss Enterprise Application Platform, published on 12 Jun 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

It was found that a SAMLRequest containing a script could be processed by Picketlink versions shipped in Jboss Application Platform 7.2.x and 7.1.x. An attacker could use this to send a malicious script to achieve cross-site scripting and obtain unauthorized information or conduct further attacks.

Weakness: CWE-79

Which versions are affected by CVE-2019-3872?

It affects 2 products.

Products include Redhat Jboss Enterprise Application Platform, Redhat Single Sign-On.

How do I fix CVE-2019-3872?

Apply the vendor's patch.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-3872 being exploited?

There is no known exploitation of CVE-2019-3872 in the wild and no public exploit code.

All Redhat Jboss Enterprise Application Platform vulnerabilities

Sources

Also known as GHSA-5qcq-825g-ghpg.

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