Check: ZWMQ0011
zOS ACF2 STIG:
ZWMQ0011
(in versions v6 r43 through v6 r37)
Title
WebSphere MQ channel security must be implemented in accordance with security requirements. (Cat I impact)
Discussion
WebSphere MQ Channel security can be configured to provide authentication, message privacy, and message integrity between queue managers. Secure Sockets Layer (SSL) uses encryption techniques, digital signatures and digital certificates to provide message privacy, message integrity and mutual authentication between clients and servers. Failure to properly secure a WebSphere MQ channel may lead to unauthorized access. This exposure could compromise the availability, integrity, and confidentiality of some system services, applications, and customer data.
Check Content
Refer to the following report produced by the z/OS Data Collection: - MQSRPT(ssid) NOTE: ssid is the queue manager name (a.k.a., subsystem identifier). Collect the following Information for Websphere MQ and MQSeries queue manager. - If a WebSphere MQ queue manager communicates with a MQSeries queue manager, provide the WebSphere MQ queue manager and channel names used to connect with MQSeries. - If any WebSphere MQ channels are used to communicate within the enclave, provide a list of channels and provide documentation regarding the sensitivity of the information on the channel. Automated Analysis requires Additional Analysis. Automated Analysis Refer to the following report produced by the z/OS Data Collection: - PDI(ZWMQ0011) If the communication lines are controlled by a VPN and are not available in the clear at any point outside the enclave, than this is acceptable and can override the requirement to use SSL. If this is true, this is not a finding. If the following guidelines are true for each channel definition displayed from the DISPLAY CHANNEL command, this is not a finding. ___ Verify that each WebSphere MQ channel is using SSL by checking for the SSLCIPH parameter, which must specify a FIPS 140-2 compliant value of the following: (Note: Both ends of the channel must specify the same cipher specification.) ECDHE_ECDSA_AES_128_CBC_SHA256 ECDHE_ECDSA_AES_256_CBC_SHA384 ECDHE_RSA_AES_128_CBC_SHA256 ECDHE_RSA_AES_256_CBC_SHA384 TLS_RSA_WITH_3DES_EDE_CBC_SHA TLS_RSA_WITH_AES_128_CBC_SHA TLS_RSA_WITH_AES_128_CBC_SHA256 TLS_RSA_WITH_AES_256_CBC_SHA TLS_RSA_WITH_AES_256_CBC_SHA256 ___ Repeat the above step for each queue manager ssid identified.
Fix Text
The system programmer and the IAO will review the WebSphere MQ Screen interface invoked by the REXX CSQOREXX. Reviewing the channel’s SSLCIPH setting. Display the channel properties and look for the "SSL Cipher Specification" value. Ensure that a FIPS 140-2 compliant value is shown. ECDHE_ECDSA_AES_128_CBC_SHA256 ECDHE_ECDSA_AES_256_CBC_SHA384 ECDHE_RSA_AES_128_CBC_SHA256 ECDHE_RSA_AES_256_CBC_SHA384 TLS_RSA_WITH_3DES_EDE_CBC_SHA TLS_RSA_WITH_AES_128_CBC_SHA TLS_RSA_WITH_AES_128_CBC_SHA256 TLS_RSA_WITH_AES_256_CBC_SHA TLS_RSA_WITH_AES_256_CBC_SHA256 Note that both ends of the channel must specify the same cipher specification. Repeat these steps for each queue manager ssid identified.
Additional Identifiers
Rule ID: SV-7259r5_rule
Vulnerability ID: V-6958
Group Title: ZWMQ0011
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000068 |
The information system implements cryptographic mechanisms to protect the confidentiality of remote access sessions. |
| CCI-002421 |
The information system implements cryptographic mechanisms to prevent unauthorized disclosure of information and/or detect changes to information during transmission unless otherwise protected by organization-defined alternative physical safeguards. |
| CCI-002423 |
The information system implements cryptographic mechanisms to protect message externals (e.g., message headers and routing information) unless otherwise protected by organization-defined alternative physical safeguards. |
| CCI-002450 |
The information system implements organization-defined cryptographic uses and type of cryptography required for each use in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards. |
Controls
| Number | Title |
|---|---|
| AC-17 (2) |
Protection Of Confidentiality / Integrity Using Encryption |
| SC-8 (1) |
Cryptographic Or Alternate Physical Protection |
| SC-8 (3) |
Cryptographic Protection For Message Externals |
| SC-13 |
Cryptographic Protection |