Prevent LDAP Entry Poisoning

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Metadata

ID: java-security/ldap-entry-poisoning

Language: Java

Severity: Info

Category: Security

Description

JNDI API support the binding of serialize object in LDAP directories and can lead to remove code execution. Generally, object deserialization should be consider a risky operation that can lead to remote code execution. This exploitation has been demonstrated at Black Hat USA 2016.

Learn More

Black Hat 2016 Exploitation

Non-Compliant Code Examples

class NotCompliant {
    public void myMethod() {
        DirContext ctx = new InitialDirContext();

        ctx.search(query, filter,
                new SearchControls(scope, countLimit, timeLimit, attributes,
                    true,
                    deref));
    }
}

Compliant Code Examples

class Compliant {
    public void myMethod() {
        DirContext ctx = new InitialDirContext();

        ctx.search(query, filter,
                new SearchControls(scope, countLimit, timeLimit, attributes,
                    false,
                    deref));
    }
}