Ricoh Aficio MP 6001 SP Security Target - Page 67

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O.FUNC.NO_ALT Protection of user job alteration

O.FUNC.NO_ALT is the security objective to prevent the user jobs from unauthorised alteration by persons

without a login user name, or by persons with a login user name but without an access permission to the user

job. To fulfil this security objective, it is required to implement the following countermeasures.

(1)

Specify and implement the access control to user document.

FDP_ACC.1(a) and FDP_ACF.1(a) determine the accessible user jobs and permitted operation on the

user job for each normal user, and consequently, this permits the access to the user job for each normal

user.

(2)

Use trusted channels for sending or receiving user jobs.

The user jobs sent and received from the LAN interface are protected by FTP_ITC.1.

(3)

Management of the security attributes.

FMT_MSA.1(a) specifies the available operations (newly create, query, modify and delete) on the login

user name, and available operations (query and modify) on the document user list, and a specified user

is thus restricted to perform each operation.

FMT_MSA.3(a) associates the login user name of the normal user who generated the job as the defined

default value with the document user list and document type which are the security attributes of the user

document (object) when the user job is generated.

By satisfying FDP_ACC.1(a), FDP_ACF.1(a), FTP_ITC.1, FMT_MSA.1(a) and FMT_MSA.3(a), which are

the security functional requirements for these countermeasures, O.FUNC.NO_ALT is fulfilled.

O.PROT.NO_ALT Protection of TSF protected data alteration

O.PROT.NO_ALT is the security objective to allow only users who can maintain the security to alter the

TSF protected data. To fulfil this security objective, it is required to implement the following

countermeasures.

(1)

Management of the TSF protected data.

By FMT_MTD.1, only the MFP administrator is allowed to manage the date, time, S/MIME user

information, destination folder and users for stored and received documents.

(2)

Specification of the Management Function.

FMT_SMF.1 performs the required Management Functions for Security Function.

(3)

Specification of the roles.

FMT_SMR.1 maintains the users who have the privileges.

(4)

Use trusted channels for sending or receiving the TSF protected data.

The TSF protected data sent and received from the LAN interface are protected by FTP_ITC.1.

By satisfying FMT_MTD.1, FMT_SMF.1, FMT_SMR.1 and FTP_ITC.1, which are the security functional

requirements for these countermeasures, O.PROT.NO_ALT is fulfilled.

O.CONF.NO_DIS Protection of TSF confidential data disclosure

O.CONF.NO_DIS is the security objective to allow only users who can maintain the security to disclose the

TSF confidential data. To fulfil this security objective, it is required to implement the following

countermeasures.

Copyright (c) 2011 RICOH COMPANY, LTD. All rights reserved.

Section	Page
1 ST Introduction	7
1.1 ST Reference	7
1.2 TOE Reference	7
1.3 TOE Overview	9
1.3.1 TOE Type	9
1.3.2 TOE Usage	9
1.3.3 Major Security Features of TOE	11
1.4 TOE Description	11
1.4.1 Physical Boundary of TOE	11
1.4.2 Guidance Documents	14
1.4.3 Definition of Users	17
1.4.3.1. Direct User	19
1.4.3.2. Indirect User	19
1.4.4 Logical Boundary of TOE	20
1.4.4.1. Basic Functions	20
1.4.4.2. Security Functions	23
1.4.5 Protected Assets	24
1.4.5.1. User Data	24
1.4.5.2. TSF Data	25
1.4.5.3. Functions	25
1.5 Glossary	25
1.5.1 Glossary for This ST	25
2 Conformance Claim	28
2.1 CC Conformance Claim	28
2.2 PP Claims	28
2.3 Package Claims	28
2.4 Conformance Claim Rationale	29
2.4.1 Consistency Claim with TOE Type in PP	29
2.4.2 Consistency Claim with Security Problems and Security Objectives in PP	29
2.4.3 Consistency Claim with Security Requirements in PP	29
3 Security Problem Definitions	32
3.1 Threats	32
3.2 Organisational Security Policies	33
3.3 Assumptions	33
4 Security Objectives	35
4.1 Security Objectives for TOE	35
4.2 Security Objectives of Operational Environment	36
4.2.1 IT Environment	36
4.2.2 Non-IT Environment	37
	37
4.3 Security Objectives Rationale	38
4.3.1 Correspondence Table of Security Objectives	38
4.3.2 Security Objectives Descriptions	39
5 Extended Components Definition	43
5.1 Restricted forwarding of data to external interfaces (FPT_FDI_EXP)	43
6 Security Requirements	45
6.1 Security Functional Requirements	45
6.1.1 Class FAU: Security audit	45
6.1.2 Class FCS: Cryptographic support	48
6.1.3 Class FDP: User data protection	49
6.1.4 Class FIA: Identification and authentication	53
6.1.5 Class FMT: Security management	56
6.1.6 Class FPT: Protection of the TSF	62
6.1.7 Class FTA: TOE access	62
6.1.8 Class FTP: Trusted path/channels	63
6.2 Security Assurance Requirements	63
6.3 Security Requirements Rationale	64
6.3.1 Tracing	64
6.3.2 Justification of Traceability	65
6.3.3 Dependency Analysis	71
6.3.4 Security Assurance Requirements Rationale	73

Ricoh Aficio MP 6001 SP Security Target - Page 67

O.CONF.NO_DIS Protection of TSF confidential data disclosure

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