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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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Vulnerability Assessment Details

Bugbear worm

Vulnerability Assessment Summary
Detect Bugbear worm

Detailed Explanation for this Vulnerability Assessment

BugBear backdoor is listening on this port.
A cracker may connect to it to retrieve secret
information, e.g. passwords or credit card numbers...

The BugBear worm includes a key logger and can kill
antivirus or personal firewall softwares. It propagates
itself through email and open Windows shares.
Depending on the antivirus vendor, it is known as: Tanatos,
I-Worm.Tanatos, NATOSTA.A, W32/Bugbear-A, Tanatos, W32/Bugbear@MM,
WORM_BUGBEAR.A, Win32.BugBear...

http://www.sophos.com/virusinfo/analyses/w32bugbeara.html
http://www.ealaddin.com/news/2002/esafe/bugbear.asp
http://securityresponse.symantec.com/avcenter/venc/data/w32.bugbear@mm.html
http://vil.nai.com/vil/content/v_99728.htm

Reference : http://online.securityfocus.com/news/1034
Reference : http://support.microsoft.com/default.aspx?scid=KB
en-us
329770&

Solution:
- Use an Anti-Virus package to remove it.
- Close your Windows shares
- Update your IE browser
See 'Incorrect MIME Header Can Cause IE to Execute E-mail Attachment'
http://www.microsoft.com/technet/security/bulletin/MS01-020.mspx

Network Security Threat Level: Critical

Networks Security ID: 2524

Vulnerability Assessment Copyright: This script is Copyright (C) 2002 Michel Arboi & Thomas Reinke

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