To reduce the privilege level of an enable command from 15 to 1, use the following command: Router1# configure terminal Enter configuration commands, one per line. Symptom: A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root-level privileges. The NSA guide to Cisco router security recommends that the following commands be moved from their default privilege level 1 to privilege level 15 connect , telnet, rlogin, show ip access-lists, show access-lists, and show logging. For this example, we'll enable privilege level 2, then reassign both "Ping" and "Reload" commands. In Cisco IOS, the higher your privilege level, the more router access you have. A: This is by design and is part of the command security mechanisms in IOS. You must perform these configuration steps by loging in to Privilege Level 15. Requirements. Changing these levels limits the usefulness of the router to an attacker who compromises a user-level account. Administrator (admin:) Usage Guidelines. Now comes the fun part, we can create the "middle ground" by defining arbitrary roles through customization of privilege levels 2 through 14. There are 16 different levels of privilege that can be set, ranging from 0 to 15. The write terminal / show running-config command shows a blank configuration. Step 03 - After performing . You can also increase the privilege level of a level 1 command: When you log in to a Cisco router under the default configuration, you're in user EXEC mode (level 1). Level 1 is essentially Exec access, with access to run read-only commands. Command privilege level: 1 Applies to: Unified Communications Manager, IM and Presence service on Unified Communications Manager, Cisco Unity Connection By default, the Cisco IOS software operates in two modes (privilege levels) of password security: user EXEC (Level 1) and privileged EXEC (Level 15). Solution. Cisco switches (and other devices) use privilege levels to provide password security for different levels of switch operation. R2#conf t Enter configuration commands, one per line. I'm trying to configure Cisco IOS privilege levels for our switches to allow other members of the IT department to access some basic access, shut/no shut interfaces and configure vlans and show what they have done. End with CNTL/Z. Cisco. Privilege level 0 - No Access at all Privilege level 1 - User Mode (also known as "user EXEC" mode) Privilege level 15 - Privileged mode (enable mode or "privileged EXEC" mode) Remaining 2-14 Privilege levels are available for customization. Refer to the Cisco Technical Tips Conventions for more information on document conventions. Because the default privilege level of these commands has been changed from 0 to 15, the user beginner - who has restricted only to level 0 commands - will be unable to execute these commands. Privilege level 1 Normal level on Telnet; includes all user-level commands at the router> prompt. Posted by tmorgan1991 on Feb 6th, 2018 at 12:10 PM. Only 1 and 15 come "predefined", the levels between would need to be set manually. Privilege Levels. You can configure up to 16 hierarchical levels of . In Cisco IOS shell, we have 16 levels of Privileges (0-15). However, any other commands (that have a privilege level of 0) will still work. By default, the Cisco IOS software command-line interface (CLI) has two levels of access to commands: user EXEC mode (level 1) and privileged EXEC mode (level 15). Level 1: Read-only, and access to limited commands, such as the "Ping" command. The running config for the console port is shown with privilege level set to 15. privilege level 1 = non-privileged (prompt is router> ), the default level for logging in privilege level 15 = privileged (prompt is router# ), the level after going into enable mode privilege level 0 = seldom used, but includes 5 commands: disable, enable, exit, help, and logout Solved. This command displays all of the commands that the current user is able to modify (in other words, all the commands at or below the user's current privilege level). Command Modes. Router1 (config)# privilege exec level 1 show startup-config Router1 (config)# end Router1#. By default, the Cisco IOS software command-line interface (CLI) has two levels of access to commands: user EXEC mode (level 1) and privileged EXEC mode (level 15) check Cisco IOS Security Configuration Guide, Release 12.2 - Configuring Passwords and Privileges [Cisco IOS Software Releases for further info ism_cisco at the router prompt. However, you can configure additional levels of access to commands, called privilege levels, to meet the needs of your users while protecting the system from unauthorized access. *Commands available at a particular level in a particular router can be found by typing a ? By default there are only two privilege levels in use on a Cisco device, level 1 and level 15. Since configuration commands are level 15 by default, the output will appear blank. R2 (config)#line con 0 R2 (config-line)#privilege level 15. Level 1 is the default user EXEC privilege. Once you've created users at one of those levels, you'd use. privilege level 15 Includes all enable-level commands at the router# prompt. Commands available at a particular level in a particular router can be found by typing a ? Privilege level 15 includes all enable-level commands at the router# prompt. privilege exec level <#> <command> to specify commands that can be run at that priv level. Level 15 is privileged-Exec access, with access to Enable and Configuration mode and access to change things on the device. Level 1- User-level access allows you to enter in User Exec mode that provides very limited read-only access to the router. End with CNTL/Z. The certificate name can be obtained by using the show cert list own command.. The command should not display commands above the user's current privilege level because of security . The highest level, 15, allows the user to have all rights to the device. This vulnerability is due to insufficient input validation of data that is passed into the Tcl interpreter. But most users of Cisco routers are familiar with only two privilege levels: User EXEC mode privilege level 1 Privileged EXEC mode privilege level 15 When you log in to a Cisco. * Router>show privilege Current privilege level is 1 To configure a Privilege Level with addidional Cisco IOS CLI commands, use "privilege" command from Global Configuration mode. If I use the following as an example . privilege level 1 Normal level on Telnet; includes all user-level commands at the router> prompt. These are three privilege levels the Cisco IOS uses by default: Level 0- Zero-level access only allows five commands- logout, enable, disable, help and exit. Command privilege level: 1 Allowed during upgrade: Yes Applies to: Cisco Unified Communications Manager, IM and Presence service on Cisco Unified Communications Manager, and Cisco Unity Connection. Step 1 - Configure " enable secret " password for Privilege Level 10 R1# configure terminal R1 (config)# enable secret level 10 Cisco123 R1 (config)# exit Step 2 - Configure Privilege Level 10 to move to Global Configuration mode, configure interfaces with IPv4 addresses and shut the interface. In this example, privilege level 15 is used to set the console privilege to enable mode upon login. Level 0 can be used to specify a more . An attacker could exploit this vulnerability by loading malicious Tcl code on an . R1# configure terminal Sample AAA Flow Privilege Levels By default, there are three command levels on the router: privilege level 0Includes the disable, enable, exit, help, and logout commands privilege level 1Includes all user -level commands at the router> prompt This command allows network administrators to provide a more granular set of rights to Cisco network devices. at the router prompt. Even though you lower the required privilege level for the show running-config command, the output will never include commands that are above the user's privilege level. utils contactsearchauthentication* utils contactsearchauthentication disable This is for IOS 12, the syntax might be a bit different on older or newer versions, ASA or NXOS. The commands that can be run in user EXEC mode at privilege level 1 are a subset of the commands that can be run in privileged EXEC mode at privilege 15. Cisco IOS Privilege Levels. General syntax of the "privilege" command is OmniSecuR1(config)# privilege <mode> level <level> <command-string>.