[原文]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.
CBOS contains a flaw that may lead to an unauthorized information disclosure. The issue is triggered when a user telnets to the device after a user in the first session issues the 'sh nat' command, which will disclose screen information resulting in a loss of confidentiality.
Currently, there are no known upgrades, patches, or workarounds available to correct this issue. This vulnerability does not seem to have been acknowledged by Cisco.