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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

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Oracle tnslsnr version query

Vulnerability Assessment Summary connects and issues a TNS VERSION command Detailed Explanation for this Vulnerability Assessment Summary : The Oracle tnslsnr service is listening on the remote port. Description : The remote host is running the Oracle tnslsnr, a network interface to the remote Oracle database. This product permits a remote user to acertain the existence and version number of a given Oracle installation. In addition, older versions of this service may let a possible hacker write to arbitrary files on the remote host. Solution : Filter incoming traffic to this port so that only authorized hosts can connect to it. See also : http://otn.oracle.com/deploy/security/pdf/listener_alert.pdf Network Security Threat Level: None Networks Security ID: 1853 Vulnerability Assessment Copyright: James W. Abendschan (GPL)

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