STIGQter STIGQter: STIG Summary: z/OS RACF STIG Version: 6 Release: 43 Benchmark Date: 24 Jan 2020: WebSphere MQ Alternate User resources defined to MQADMIN resource class are not protected in accordance with security requirements.

DISA Rule

SV-7550r2_rule

Vulnerability Number

V-6969

Group Title

ZWMQ0057

Rule Version

ZWMQ0057

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Alternate userid security allows access to be requested under another userid. Alternate userid security will be active, and all profiles ssid.ALTERNATE.USER.alternateuserid will be defined to the MQADMIN class with UACC(NONE) specified. Restrict update access to those userids requiring access to alternate userids.

For all alternate user resources (i.e., ssid.ALTERNATE.USER.alternateuserid) defined to the MQADMIN resource class, ensure the following items are in effect:

NOTE 1: ssid is the queue manager name (a.k.a., subsystem identifier).

1) Resource profiles are defined with a UACC(NONE).
2) Access authorization restricts access to users requiring the ability to use the alternate userid. This is difficult to determine. However, an item for concern may be a profile with * READ specified in the access list.

A set of sample commands are provided below to implement the minimum profiles necessary for proper security.

/* THE FOLLOWING PROFILE FORCES GRANULAR PROFILES DEFINITIONS */
RDEF MQADMIN ** UACC(NONE) OWNER(ADMIN) AUDIT(ALL(READ)) DATA('MQADMIN DENY-BY-DEFAULT PROFILE')

RDEF MQADMIN <ssid>.ALTERNATE.USER.** UACC(NONE) OWNER(ADMIN) AUDIT(ALL(READ)) DATA('MQADMIN DENY-BY-DEFAULT for ALT USER PROFILE')

The following is a sample of the commands required to allow payroll server (PAYSRV1) to specify alternate userids starting with the characters PS on queue manager (QM1):

RDEFINE MQADMIN QMD1.ALTERNATE.USER.PS* UACC(NONE) AUDIT(ALL)

PERMIT QMD1.ALTERNATE.USER.PS* CLASS(MQADMIN) ID(PAYSRV1) ACCESS(UPDATE)

SETR RACL(MQADMIN) REF

Note that an additional WebSphere MQ Refresh may be required for active Qmanagers. This is done from the CONSOLE:

The example is for a Que Manager Named QMD1
>QMD1 REFRESH SECURITY(*)

Check Contents

a) Refer to the following reports produced by the RACF Data Collection:

- SENSITVE.RPT(MQADMIN)

b) For all alternate user resources (i.e., ssid.ALTERNATE.USER.alternateuserid) defined to the MQADMIN resource class, ensure the following items are in effect:

NOTE 1: ssid is the queue manager name (a.k.a., subsystem identifier).

1) Resource profiles are defined with a UACC(NONE).
2) Access authorization restricts access to users requiring the ability to use the alternate userid. This is difficult to determine. However, an item for concern may be a profile with * READ specified in the access list.

c) If both of the items in (b) are true, there is NO FINDING.

d) If either item in (b) is untrue, this is a FINDING.

Vulnerability Number

V-6969

Documentable

False

Rule Version

ZWMQ0057

Severity Override Guidance

a) Refer to the following reports produced by the RACF Data Collection:

- SENSITVE.RPT(MQADMIN)

b) For all alternate user resources (i.e., ssid.ALTERNATE.USER.alternateuserid) defined to the MQADMIN resource class, ensure the following items are in effect:

NOTE 1: ssid is the queue manager name (a.k.a., subsystem identifier).

1) Resource profiles are defined with a UACC(NONE).
2) Access authorization restricts access to users requiring the ability to use the alternate userid. This is difficult to determine. However, an item for concern may be a profile with * READ specified in the access list.

c) If both of the items in (b) are true, there is NO FINDING.

d) If either item in (b) is untrue, this is a FINDING.

Check Content Reference

M

Responsibility

Information Assurance Officer

Target Key

197

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