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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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Check for bdir.htr files

Vulnerability Assessment Summary Check for existence of bdir.htr Detailed Explanation for this Vulnerability Assessment The file bdir.htr is a default IIS files which can give a malicious user a lot of unnecessary information about your file system. Specifically, the bdir.htr script permits the user to browse and create files on hard drive. As this includes critical system files, it is highly possible that the attacker will be able to use this script to escalate rights and gain 'Administrator' access. Example, http://target/scripts/iisadmin/bdir.htr??c:\ Solution: If you do not need these files, then delete them, otherwise use suitable access control lists to ensure that the files are not world-readable. Network Security Threat Level: Medium Networks Security ID: Vulnerability Assessment Copyright: By John Lampe....j_lampe@bellsouth.net

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