![]() Here are some examples:įor instance, to decrypt the above type 7 password using Ciscot7 Python script, simply run: wget There are number of freely available tools for decrypting type 7 password. The following example shows type 7 password found in a Cisco configuration: username admin privilege 15 password 7 0236244818115F3348 The algorithm is reversible and thus it can be deciphered instantly into a plain text without any need for cracking. This password type uses Vigenère cipher which is essentially a simple alphabetical substitution encryption. We can clearly see that the admin user has a password of Cisco type 7 password The following example shows type 0 password found in a Cisco configuration: username admin privilege 15 password 0 you can see, there is really nothing to crack or decrypt. It is the oldest and the most insecure method of storing passwords in Cisco devices. Let’s jump right to it.Cisco type 0 passwordĬisco password type 0 is basically clear text password. In the following sections, we will go through all these password types by order from the least secure (most easiest to crack) to the most secure (hardest to crack): Cisco Passwordĭisclaimer: All examples and speed measurements in this article were produced on a standard modern laptop equipped with a GPU and 4 CPU cores. The attackers are typically looking for sensitive information such as stored credentials, SNMP community strings, network configuration details and so on.Ĭredentials are naturally the most interesting thing to look for and over the years Cisco has developed number of different methods for storing passwords in their devices. The first thing attackers do after they gain access to a Cisco device is that they pull current configuration from the device either by running show running or show running-config command. Or we may just flat out break into some Cisco device configured with default credentials. from PuTTY) containing Cisco configuration snippets. It may be a configuration backup found laying somewhere on some computer in the network. To give a little more info, here's what I get from my C2960 running IOS Version 12.During penetration tests, it is not uncommon to come across a configuration file of a Cisco network device. I know of no canonical list for either category. I understand this is a roundabout, reversed answer to your question, but it's the standard one. Priv 1 can do anything that doesn't require enable mode. 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. The default configuration for Cisco IOS software-based networking devices uses privilege level 1 for user EXEC mode and privilege level 15 for privileged EXEC. ![]() The user is not permitted to see usernames and passwords of the other users, but he is trusted with the SNMP configuration.įrom Cisco IOS 15SY, User Security Config Guide: He can configure snmp-server community because configure terminal is at level 8 (at or below level 9), and snmp-server community is a level 8 command. User user_9 is able to Telnet in and execute the show run command, but only sees commands that he can configure (the snmp-server community part of the router configuration, since this user is our network management administrator). The user is not permitted to see usernames and passwords of the other users, or to see Simple Network Management Protocol (SNMP) information. User user_6 is able to Telnet in and execute the show run command, but the resulting configuration is virtually blank because this user cannot configure anything (configure terminal is at level 8, not at level 6). Privilege exec level 8 configure terminal Privilege configure level 8 snmp-server community Username user_15 privilege 15 password pass_15 Username user_6 privilege 6 password pass_6 Username user_9 privilege 9 password pass_1 The highest privilege level can execute commands that associated to it plus the the command associated to the lower privilege You can configure whatever privilege you need with whatever commands you allowīy using the privilege command as illustrated. *Commands available at a particular level in a particular router can be found by typing a ? at the router prompt. ![]() Privilege level 15 - includes all enable-level commands at the router# prompt. Privilege level 1 - Normal level on Telnet includes all user-level commands at the router> prompt. ![]() Privilege level 0 - includes the disable, enable, exit, help, and logout commands. For Cisco device There are 16 privilege levels 3 of them are default and the other are configurable.
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