selang Reference Guide › Classes and Properties › Classes in the AC Environment › PROGRAM Class

PROGRAM Class

Each record in the PROGRAM class defines a program that is considered part of the trusted computing base. Programs in this class are trusted not to have security breaches because they are monitored by the Watchdog to ensure they are not modified. If a trusted program is altered, CA ControlMinder automatically marks the program as untrusted, and the program is prevented from executing. Optionally, you can also allow or prevent execution of untrusted programs using the BLOCKRUN property.

Each PROGRAM record contains several properties that define information about the trusted program file.

Usage notes:

• On UNIX, the PROGRAM class may also contain programs that are not marked as setuid or setgid.
• You can define any program as a trusted program within CA ControlMinder.

  A program cannot be used in a program access control list (PACL) unless it is defined in the PROGRAM class. (However, a program is automatically added to the PROGRAM class when it is added to a PACL.)

• Directories cannot be defined in the PROGRAM class.

The key of the PROGRAM class record is the file name of the program the record protects. You must specify the full path of the file as the object name.

The following definitions describe the properties contained in this class record. Most properties are modifiable and can be manipulated using selang or the administration interfaces. Properties marked informational cannot be modified.

ACCSTIME

(Informational). The date and time the record was last accessed.

ACCSWHO

(Informational). The administrator who last accessed the record.

ACL

Defines a list of accessors (users and groups) permitted to access the resource, and the accessors' access types.

Each element in the access control list (ACL) contains the following information:

Accessor

Defines an accessor.

Access

Defines the access authority that the accessor has to the resource.

Use the access parameter with the authorize or authorize- command to modify the ACL.

BLOCKRUN

Specifies whether to check if the program is trusted and blocks the execution of untrusted programs. The execution blocking is performed regardless whether the program is a setuid or a regular program.

Use the blockrun[-] parameter with the chres, editres, and newres commands to modify this property for resources.

CALACL

Defines a list of the accessors (users and groups) that are permitted to access the resource, and their access types according to the Unicenter NSM calendar status.

Each element in the calendar access control list (CALACL) contains the following information:

Accessor

Defines an accessor.

Calendar

Defines a reference to a calendar in Unicenter TNG.

Access

Defines the access authority that the accessor has to the resource.

Access is permitted only when the calendar is ON. Access is denied in all other cases.

Use the calendar parameter with the authorize command to permit user or group access to the resource according to the access defined in the calendar ACL.

CALENDAR

Represents a Unicenter TNG calendar object for user, group, and resource restrictions in CA ControlMinder. CA ControlMinder fetches Unicenter TNG active calendars at specified time intervals.

CATEGORY

Defines one or more security categories A security category is the name of record in the CATEGORY class. You can assign a security category to accessors and to resources. An accessor can access a resource only if the accessor is assigned to all of the security categories assigned to the resource. assigned to a user or a resource.

COMMENT

Defines additional information that you want to include in the record. CA ControlMinder does not use this information for authorization.

Limit: 255 characters.

CREATE_TIME

(Informational) Displays the date and time when the record was created.

DAYTIME

Defines the day and time restrictions that govern when an accessor can access a resource.

Use the restrictions parameter with the chres, ch[x]usr, or ch[x]grp commands to modify this property.

The resolution of daytime restrictions is one minute.

GROUPS

Defines the list of CONTAINER records that a resource record belongs to.

To modify this property in a class record, change the MEMBERS property in the appropriate CONTAINER record.

Use the mem+ or mem‑ parameter with the chres, editres or newres command to modify this property.

MD5

(Informational). The RSA-MD5 signature of the file.

NACL

The NACL property of a resource is an access control list that defines the accessors that are denied authorization to a resource, together with the type of access that they are denied (for example, write). See also ACL, CALACL, PACL. Each entry in the NACL contains the following information:

Accessor

Defines an accessor.

Access

Defines the type of access that is denied to the accessor.

Use the authorize deniedaccess command, or the authorize- deniedaccess- command, to modify this property.

NOTIFY

Defines the user to be notified when a resource or user generates an audit event. CA ControlMinder can email the audit record to the specified user.

Limit: 30 characters.

OWNER

Defines the user or group that owns the record.

PACL

Defines a list of accessors that are permitted to access the resource when the access request is made by a specific program (or a program that matches a name-pattern) and their access types. Each element in the program access control list (PACL) contains the following information:

Accessor

Defines an accessor.

Program

Defines a reference to a record in the PROGRAM class, either specifically or by wildcard pattern matching.

Access

Defines the access authority that the accessor has to the resource.

Note: You can use wildcard characters CA ControlMinder recognizes wildcard characters for some names. Where it does so, the wildcards it recognizes are * and ?. The * character represents any number of any characters, including no characters; the ? character represents one instance of any character. to specify the resource in a PACL.

Use the via(pgm) parameter with the selang authorize command to add programs, accessors, and their access types to a PACL, You can use the authorize- command to remove accessors from a PACL.

Note: For resources in PROGRAM class, PACL applies only to setuid/setgid programs on UNIX or programs with file resource on Windows. CA ControlMinder first checks for the file resource record, and if the access is allowed, then it checks the program resource record.

PGMINFO

Defines the program information automatically generated by CA ControlMinder.

The Watchdog automatically verifies the information stored in this property. If it is changed, CA ControlMinder defines the program as untrusted.

You can select any of the following flags to exclude the associated information from this verification process:

crc

The cyclic redundancy check and MD5 signature.

ctime

(UNIX only) The time of the last file status change.

device

On UNIX, the logical disk that the file resides on. On Windows, the drive number of the disk containing the file.

group

The group that owns the program file.

inode

On UNIX, the file system address of the program file. On Windows, this has no meaning

mode

The associated security protection mode for the program file.

mtime

The time the program file was last modified.

owner

The user who owns the program file.

sha1

The SHA1 signature. Digital signature method called Secure Hash Algorithm that could be applied to the program or sensitive files.

size

The size of the program file.

Use the flags, flags+, or flags- parameter with the chres, editres, or newres command to modify the flags in this property.

RAUDIT

Defines the types of access events that CA ControlMinder records in the audit log. RAUDIT derives its name from Resource AUDIT. Valid values are:

all

All access requests.

success

Granted access requests.

failure

Denied access requests (default).

none

No access requests.

CA ControlMinder records events on each attempted access to a resource, and does not record whether the access rules were applied directly to the resource, or were applied to a group or class that had the resource as a member.

Use the audit parameter of the chres and chfile commands to modify the audit mode.

SECLABEL

Defines the security label A security label is the name of a record in the SECLABEL class. A security label bundles together a security level and a set of security categories. Assigning a security label to an accessor or a resource gives the accessor or resource the combined security level and security categories associated with the security label. A security label overrides any specific security level and category assignments in an accessor or resource. of a user or resource.

Note: The SECLABEL property corresponds to the label[-] parameter of the chres and ch[x]usr commands.

SECLEVEL

Defines the security level A security level is an integer between 0 and 255 that you can assign to accessors and resources. An accessor cannot access a resource if the accessor has a security level less than the security level assigned to the resource, even if the user is granted access authority in the resource's access control list. of an accessor or resource.

Note: This property corresponds to the level[-] parameter of the ch[x]usr and chres commands.

UACC

Defines the default access authority for the resource, which indicates the access granted to accessors who are not defined to CA ControlMinder or who do not appear in the ACL of the resource.

Use the defaccess parameter with the chres, editres, or newres command to modify this property.

UNTRUST

Defines whether the resource is untrusted or trusted. If the UNTRUST property is set, accessors cannot use the resource. If the UNTRUST property is not set, the other properties listed in the database for the resource are used to determine accessor's access authority. If a trusted resource is changed in any way, CA ControlMinder automatically sets the UNTRUST property.

Use the trust[-] parameter with the chres, editres, or newres command to modify this property.

UNTRUSTREASON

(Informational). The reason why the program became untrusted.

UPDATE_TIME

(Informational) Displays the date and time when the record was last modified.

UPDATE_WHO

(Informational) Displays the administrator who performed the update.

WARNING

Specifies whether Warning mode is enabled. When Warning mode is enabled on a resource, all access requests to the resource are granted, and if an access request violates an access rule, a record is written to the audit log.