Check: CISC-ND-000010
Cisco IOS XE Switch NDM STIG:
CISC-ND-000010
(in versions v2 r2 through v1 r1)
Title
The Cisco switch must be configured to limit the number of concurrent management sessions to an organization-defined number. (Cat II impact)
Discussion
Device management includes the ability to control the number of administrators and management sessions that manage a device. Limiting the number of allowed administrators and sessions per administrator based on account type, role, or access type is helpful in limiting risks related to DoS attacks. This requirement addresses concurrent sessions for administrative accounts and does not address concurrent sessions by a single administrator via multiple administrative accounts. The maximum number of concurrent sessions should be defined based upon mission needs and the operational environment for each system. At a minimum, limits must be set for SSH, HTTPS, account of last resort, and root account sessions.
Check Content
Note: This requirement is not applicable to file transfer actions such as FTP, SCP, and SFTP. Review the switch configuration to determine if concurrent management sessions are limited as show in the example below: ip http secure-server ip http max-connections 2 … … … line vty 0 4 session-limit 2 transport input ssh For those platforms that do not support the session-limit command, the sessions can also be limited by reducing the number of active vty lines as shown in the example below. line vty 0 1 transport input ssh line vty 2 4 transport input none If the switch is not configured to limit the number of concurrent management sessions, this is a finding.
Fix Text
Configure the switch to limit the number of concurrent management sessions to an organization-defined number as shown in the example below: SW4(config)#ip http max-connections 2 SW4(config)#line vty 0 4 SW4(config)#session-limit 2
Additional Identifiers
Rule ID: SV-220518r508500_rule
Vulnerability ID: V-220518
Group Title: SRG-APP-000001-NDM-000200
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000054 |
The information system limits the number of concurrent sessions for each organization-defined account and/or account type to an organization-defined number of sessions. |
Controls
Number | Title |
---|---|
AC-10 |
Concurrent Session Control |