Metadata can help attackers learn about the system and plan a form of attack.
WCF services can be configured to expose metadata. Metadata gives detailed service description information and should not be broadcast in production environments. The HttpGetEnabled / HttpsGetEnabled
properties of the ServiceMetaData
class defines whether a service will expose the metadata.
Example 1: The code below instructs WCF to broadcast a service's metadata.
ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
smb.HttpGetEnabled = true;
smb.HttpGetUrl = new Uri(EndPointAddress);
Host.Description.Behaviors.Add(smb);
[1] Standards Mapping - OWASP Top 10 2004 - (OWASP 2004) A10 Insecure Configuration Management
[2] Standards Mapping - OWASP Top 10 2007 - (OWASP 2007) A6 Information Leakage and Improper Error Handling
[3] Standards Mapping - OWASP Top 10 2010 - (OWASP 2010) A6 Security Misconfiguration
[4] Standards Mapping - Security Technical Implementation Guide Version 3 - (STIG 3) APP3620 CAT II
[5] Standards Mapping - FIPS200 - (FISMA) CM
[6] Standards Mapping - Common Weakness Enumeration - (CWE) CWE ID 215
[7] Standards Mapping - Web Application Security Consortium 24 + 2 - (WASC 24 + 2) Information Leakage
[8] Metadata Publishing Behavior Microsoft Developer Network (MSDN)
[9] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 - (PCI 1.1) Requirement 6.5.10
[10] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 - (PCI 2.0) Requirement 6.5.5
[11] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 - (PCI 1.2) Requirement 6.5.6