Prevent LDAP injection

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Metadata

ID: csharp-security/ldap-injection

Language: C#

Severity: Warning

Category: Security

Description

Unvalidated user inputs may lead to LDAP injection. Always escape characters in your LDAP queries. Do not build LDAP queries manually.

Learn More

Escaping non special characters in string for LDAP query

Non-Compliant Code Examples

public class MyController : Controller
{
    public bool userExists(string user, string pass)
    {
        DirectoryEntry directory  = new DirectoryEntry();
        DirectorySearcher directorySearch  = new DirectorySearcher(directory);

        directorySearch.Filter = "(&(uid=" + user + ")(userPassword=" + pass + "))";

        return directorySearch.FindOne() != null;
    }
}