Cisco CBOS sh nat information disclosure
| cisco-cbos-information-disclosure (6453) |  Medium Risk |
Description:
Cisco 600 series routers running CBOS (Cisco Broadband Operating System) could allow a local attacker to view privileged information. A vulnerability in the console handling could allow a local attacker to view the contents of a show NAT command, if a connection to a Cisco router is established during the command execution. An attacker could exploit this vulnerability to obtain sensitive information and possibly launch further attacks on the vulnerable system.
Platforms Affected:
- Cisco, Broadband Operating System 2.3.053
- Cisco, Broadband Operating System 2.4.1
Remedy:
Upgrade to one of the fixed versions of CBOS (2.3.9 or later), as listed in Cisco Systems Field Notice, May 22, 2001. See References.
Consequences:
Obtain Information
References:
- BugTraq Mailing List, Fri Apr 20 2001 - 04:56:17 CDT, Bug in Cisco CBOS v2.3.0.053 at http://archives.neohapsis.com/archives/bugtraq/2001-04/0364.html.
- BugTraq Mailing List, Mon Apr 23 2001 - 11:05:00 CDT, Re: Bug in Cisco CBOS v2.3.0.053 at http://archives.neohapsis.com/archives/bugtraq/2001-04/0398.html.
- CIAC Information Bulletin L-086, Cisco Multiple Vulnerabilities in CBOS at http://www.ciac.org/ciac/bulletins/l-086.shtml.
- Cisco Systems Field Notice, May 22, 2001, More multiple vulnerabilities in CBOS at http://www.cisco.com/warp/public/707/CBOS-multiple2-pub.html.
- BID-2635: Cisco CBOS Show NAT Output Session Switching Vulnerability
- CVE-2001-0444: Cisco CBOS 2.3.0.053 sends output of the sh nat (aka show nat) command to the terminal of the next user who attempts to connect to the router via telnet, which could allow that user to obtain sensitive information.
- OSVDB ID: 1796: Cisco CBOS Show NAT Output Disclosure
Reported:
Apr 20, 2001
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