| V-6706 | High | The network attached KVM switch must not be attached to a network that is not at the same classification level as the ISs attached. | If a network attached KVM switch is attached to a network of a different classification level than the ISs attached to the KVM switch, this could lead to a compromise of sensitive data either on... |
| V-6708 | High | The KVM switch must be configured to require the user to login to the KVM switch to access the ISs attached. | Without identification and authentication of the user accessing the network attached KVM switch anyone can access the ISs attached and if they have knowledge of a valid user id and password for... |
| V-6717 | High | A network attached KVM switch must not be attached to ISs of different classification levels. | Because of the problems inherent in the spanning of networks of different classification levels, network attached KVM switches will not be attached to ISs of different classification levels. This... |
| V-6677 | High | The KVM switch must be physically protected in accordance with the requirements of the highest classification for any IS connected to the KVM switch. | If the KVM switch is not physically protected in accordance with the requirements of the highest classification for any IS connected to the KVM switch, the KVM switch can be tampered with leading... |
| V-6714 | High | The KVM switch must be configured to encapsulate and send USB connections other than KVM connections. | Some network attached KVM switched can encapsulate USB connections other than the keyboard, video monitor, and mouse connections. This connection could be a disk drive connection and could allow... |
| V-6713 | High | The KVM switch must be configured to use encrypted communications with FIPS 140-2 validated cryptography. | Because all administrative traffic contains sensitive data such as unencrypted passwords, it will be encrypted to protect it from interception. The KVM switch will be configured to require... |
| V-6710 | High | Group or shared user ids must not be used on a network attached KVM switch. | Usage of group or shared user ids makes it impossible to attribute an action to the originating user. In the case of a malicious action this could make prosecution impossible.
The ISSO will... |
| V-6709 | High | The KVM switch must be configured to require DoD compliant passwords. | Strong passwords are harder to guess or discover via brute force making the system more secure from malicious tampering.
The ISSO will ensure the KVM switch is configured to require DoD compliant... |
| V-6687 | High | The KVM switch has the ability to support a RAS connection, this feature must be disabled or the connectors on the KVM switch supporting this feature must be blocked with a tamper evident seal. | KVM switches that support Dialup Remote Access Services (RAS) do not support a robust identification and authorization process or robust auditing; therefore this feature will not be used. Tamper... |
| V-6702 | High | A KVM switch must not be used to switch a peripheral other than a keyboard, video monitor, or mouse in an environment where the KVM switch is attached to ISs of different classification levels.. | Peripheral devices, other than keyboards, video monitors, and mice, can contain persistent memory and allow data to move between ISs of differing classification levels creating an unacceptable... |
| V-6703 | High | Peripherals other than a keyboard, video monitor, or mouse must not be attached to a KVM switch that is attached to ISs of different classification levels. | It will be assumed that any peripheral other than a keyboard, video monitor, or mouse attached to a KVM switch is intended to be used regardless of the current configuration of the KVM switch.... |
| V-6705 | High | A network attached KVM switch used to administer ISs must be attached to an out-of-band network. | If a network attached KVM switch is attached to an out-of-band network there is less opportunity for a malicious user to compromise the interface and create a denial of service by issuing... |
| V-6720 | High | The A/B switch must be physically protected in accordance with the requirements of the highest classification of any IS connected to the A/B switch. | If the A/B switch is not located in an area that has the same physical security as required by the IS of the highest classification level, this can lead to a compromise of sensitive data.
The... |
| V-6707 | High | The network-facing component of a network attached KVM switch must be compliant with the current Network Infrastructure STIG. | If the network facing components of a network attached KVM switch are not in compliance with the Network Infrastructure STIG the KVM switch could expose the network to vulnerabilities that could... |
| V-6762 | High | An A/B switch must not be used to switch a peripheral device that has persistent memory or devices that support removable media between two or more ISs of different classification levels. | If the peripheral device attached to an A/B switch, which is connected to ISs of differing classification levels, can be written to and read from this can lead to the compromise of sensitive or... |
| V-6763 | High | Input or output devices including, but not limited to, scanners, printers, or plotters must not be attached to an A/B switches that spans classification levels. | Input devices attached to A/B switches that are in turn attached to ISs of different classification levels could input data to the wrong IS compromising sensitive or classified data and/or the IS... |
| V-6757 | Medium | An A/B switch must not be used to share a peripheral device between two or more users. | When using an A/B switch to switch a peripheral between two or more users the risk always exists where the peripheral is connected to the wrong IS. An example would be a scanner shared between two... |
| V-6759 | Medium | A/B switches connecting information systems of differing classification levels must be on the NIAP CCEVS Products Lists. | An A/B switch not found on the approved KVM and A/B switch lists has not been tested to verify that it does not leak data between systems. This can lead to the compromise of sensitive data or the... |
| V-6678 | Medium | Smart (intelligent or programmable) keyboard must not be used in conjunction with a KVM switch when the KVM switch is connected to ISs of different classification and/or sensitivity levels. | In an environment where the KVM switch is connected to ISs of different classification and/or sensitivity levels, a smart (intelligent or programmable) keyboard can transfer sensitive data from... |
| V-6679 | Medium | A wireless keyboard or mouse that is compliance with the current Wireless Keyboard and Mouse STIG must be attached to a KVM switch. | Signals from a wireless device can be intercepted and decoded which can lead to the compromise of sensitive data.
The ISSO or SA will ensure wireless keyboards or mice attached to KVM switches... |
| V-6715 | Medium | Unused USB ports on the KVM switch must be blocked with tamper evident seals on a KVM switch that can encapsulate and send the USB protocol over the network to the client. | By blocking the unused USB ports on a network attached KVM switch that can encapsulate USB over IP with tamper evident seals there will be an indication if someone has attached an unauthorized USB... |
| V-6681 | Medium | A KVM switch with configurable features must have the configuration protected from modification with a DoD compliant password. | If the KVM switch is configurable, some features that are available such as auto toggling between attached ISs are not permitted. If the configuration is not protected by a password it can be... |
| V-6683 | Medium | A hot key feature must not be enabled other than the menu feature that allows the user to select the IS to be used from the displayed menu. | There are many "hot key" features that could be used. Since each vender has a different set of features and it is impractical to review all features from all venders for potential vulnerabilities,... |
| V-6682 | Medium | The KVM switch feature for automatically toggling between ISs must be disabled. | The feature that automatically toggles between connected ISs or active ISs can cause a screen to be automatically displayed that contains sensitive information. This can lead to the compromise of... |
| V-6686 | Medium | The KVM switch must be configured to force the change of the configuration password every 90 days or there is no policy and procedure in place to change the configuration password every 90 days. | The longer the time between password changes the greater the chance the password will become compromised. A compromised password can allow a malicious user to change the configuration of the KVM... |
| V-6716 | Medium | A network attached KVM switch must not be configured to control the power supplied to the ISs attached to the KVM switch or the connectors on the KVM switch that support this feature are not blocked with tamper evident seals. | If a network attached KVM switch can control the power to the ISs attached to it and the KVM switch is compromised, a denial of service can be caused by powering off all the ISs attached to the... |
| V-6701 | Medium | Tamper evident seals must be attached to the KVM switch and all IS cables at their attachment points where the KVM switch is attached to ISs of different classification levels. | Tamper evident seals are designed to break if tampered with or show evidence of tampering. They are used to indicate a cabinet has been opened or a cable has been removed, moved or added. For KVM... |
| V-6704 | Medium | A KVM switch, which is attached to ISs of different classification levels, must have connections for peripherals, other than the keyboard, video monitor, or mouse, blocked with tamper evident seals. | It will be assumed that KVM switches that can switch peripherals other than the keyboard, video monitor, and mouse, that are attached to ISs of differing classification levels, and that do not... |
| V-6760 | Medium | Tamper evident seals must be attached to the A/B switch and all IS cables at their attachment points for A/B switches attached to devices or ISs that have different classification levels. | Without the presences of tamper evident seals the A/B switch or its connections can be tampered with and the tampering will go undetected. This can lead to the compromise of sensitive data or the... |
| V-6699 | Medium | KVM or A/B switches must be approved prior to being connected to ISs of different classification levels. | Only KVM switches that have been tested and verified to prevent the transfer of data from one IS to another will be used when the ISs connected to the switch are of differing classification... |
| V-6719 | Low | There must be user documentation describing the correct usage and user responsibilities for an A/B switch. | The Security Features Users Guide (SFUG) gives the user a single source to find security policy and guidance as to the user’s responsibility for security. The general policies and user... |
| V-6718 | Low | There must be user agreements documenting the use of A/B switches. | A signed user agreement is proof that the user has been informed of his security responsibilities when using an A/B switch.
The ISSO will maintain written user agreements for all users authorized... |
| V-6675 | Low | Written user agreements for all users authorized to use the KVM or A/B switch must be maintained. | A written user agreement allows the ISSO to be certain the end user that will be using the equipment has been presented with the documentation that explains their duties and responsibilities in... |
| V-6676 | Low | A SFUG, or an equivalent document, that describes the correct uses of the switch and user responsibilities, must be maintained and distributed. | The SFUG (Security Features User Guide) or an equivalent document describes the user’s security responsibilities including any site-specific requirements. This gives the user a single reference... |
| V-6712 | Low | The network attached KVM switch must display an Electronic Notice and Consent Banner complaint with requirements of CJSCM 6510.01. | The warning banner notifies the user they are accessing a DoD system and they consent to having their actions monitored. Without this banner it is difficult to prosecute individuals who violate... |
| V-6711 | Low | The network attached KVM switch must be configured to restrict a users access only to the systems they require. | Users accessing ISs they do not need access to can lead to the compromise of sensitive data.
The ISSO will ensure the KVM switch is configured to restrict a user’s access to only the systems they require. |
| V-6680 | Low | The desktop background of information systems attached to a KVM switch must be labeled with the proper classification banners. | Without the banners to identify the information system the KVM switch is currently active on, the user could enter a command to the wrong information system and create a denial of service or the... |
| V-6685 | Low | A written description of the KVM switch, the ISs attached to the KVM switch, and the classification level of each IS attached to the KVM switch must be maintained. | Without a written description of the KVM switch, the ISs attached to the KVM switch, and the classification level of each IS attached to the KVM switch, tampering with the KVM switch by adding or... |
| V-6684 | Low | A machine-readable or a paper-document backup must be maintained for the configuration of the KVM switch. | Without a backup of the KVM switch's configuration, you can have a denial of service if the configuration cannot be restored quickly in the event it is lost or a faulty switch needs to be... |
| V-6758 | Low | The A/B switch must be properly marked and labeled. | Failure to correctly mark switch positions and cable connections can lead to the A/B switch connecting the wrong device to the wrong system for the current intended use. This can lead to a denial... |
| V-6700 | Low | A KVM switch must not be cascaded while being attached to ISs of different classification levels. | Cascading KVM switches, connecting one switch to another switch, can make it difficult to determine which system is currently connected to the keyboard, video monitor, and mouse by simple... |
| V-6761 | Low | A/B switches must not be cascaded when connected to devices or ISs which are at different classification levels. | When A/B switches are cascaded it is difficult to verify the currently selected connection is the correct selection. When A/B switches are used with ISs of differing classification levels this can... |
| V-6698 | Low | Written permission from the AO responsible for each IS attached to a KVM switch that is attached to ISs of different classification levels must be maintained. | The AO responsible for an IS attached to a KVM switch that has other ISs attached of differing classifications levels must approve of the use of the KVM switch. The AO is the only individual that... |
