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UNIRAS Brief - 128/04 - Latest Bagle Variants Exploit Vulnerability



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 128/04 dated 18.03.04  Time: 16:20  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
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Latest Bagle Variants Exploit Vulnerability

Detail
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The latest Bagle variants, Q, R, S & T, do not rely on user interaction to spread. Instead an exploit of the Internet Explorer Object Data Remote Execution Vulnerability (see http://www.eeye.com/html/Research/Advisories/AD20030820.html) downloads a Visual Basic Script (VBScript) file with a .PHP extension from the web. This script is used to download a further VBScript file, which in turn downloads and executes the worm, sm.exe. The point to note is that the worm does not require user intervention in order to spread. However, the Internet Explorer Object Data Remote Execution Vulnerability has been patched by Microsoft (see http://www.microsoft.com/security/security_bulletins/ms03-040.asp). System administrators are advised to ensure that all instances of Microsoft Internet Explorer are patched against this vulnerability. Further information on the latest Bagle variants and removal details can be found at:

 

http://www.f-secure.com/v-descs/bagle_q.shtml

http://vil.nai.com/vil/newly-discovered-viruses.asp

http://www.sophos.co.uk/virusinfo/analyses/w32bagleq.html

 
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For additional information or assistance, please contact the HELP Desk by 
telephone or Not Protectively Marked information may be sent via 
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UNIRAS wishes to acknowledge the contributions of F-Secure for the information 
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade 
name, trademark manufacturer, or otherwise, does not constitute or imply 
its endorsement, recommendation, or favouring by UNIRAS or NISCC.  The views 
and opinions of authors expressed within this notice shall not be used for 
advertising or product endorsement purposes.

Neither UNIRAS or NISCC shall also accept responsibility for any errors 
or omissions contained within this briefing notice. In particular, they shall 
not be liable for any loss or damage whatsoever, arising from or in connection 
with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST) 
and has contacts with other international Incident Response Teams (IRTs) in 
order to foster cooperation and coordination in incident prevention, to prompt 
rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
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<End of UNIRAS Briefing>

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