Cisco 675 router running CBOS allows unauthorized Telnet sessions
| cisco-cbos-telnet (4251) |  High Risk |
Description:
Cisco 675 DSL routers running CBOS (Cisco Broadband Operating System) in the default configuration are not password protected. Remote attackers can establish Telnet connections to the router without authentication.
Platforms Affected:
- Cisco, 675 Router
Remedy:
To set passwords that will secure your router:
- Establish a telnet connection to your router. Refer to your router documentation.
- Type 'enable' to enter administration mode.
- Type 'set password exec clear NEWPASSWORD exec' to set the exec mode password.
- Type 'set password enable clear NEWPASSWORD enable' to set the superuser password.
Consequences:
Gain Access
References:
- BugTraq Mailing List, Sat, 31 Jul 1999 16:57:33 -0400, Cisco 675 password nonsense at http://archives.neohapsis.com/archives/bugtraq/1999-q3/0287.html.
- CVE-1999-0571: A router's configuration service or management interface (such as a web server or telnet) is configured to allow connections from arbitrary hosts.
- CVE-1999-0889: Cisco 675 routers running CBOS allow remote attackers to establish telnet sessions if an exec or superuser password has not been set.
- OSVDB ID: 39: Cisco 675 Router Has No Default Password
Reported:
Jul 31, 1999
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
Copyright (c) 1994-2008 Internet Security Systems, Inc. All rights reserved worldwide.
For corrections or additions please email xforce@iss.net