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             AUSCERT External Security Bulletin Redistribution

                  ESB-2004.0806 -- Ethereal enpa-sa-00016
       Multiple vulnerabilities in Ethereal versions 0.9.0 to 0.10.7
                             21 December 2004


        AusCERT Security Bulletin Summary

Product:           Ethereal 0.10.7 and prior
Operating System:  UNIX variants
                   Linux variants
Impact:            Execute Arbitrary Code/Commands
                   Denial of Service
Access:            Remote/Unauthenticated
CVE Names:         CAN-2004-1142 CAN-2004-1141 CAN-2004-1140

Original Bulletin: http://www.ethereal.com/appnotes/enpa-sa-00016.html

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Name: Multiple problems in Ethereal versions 0.9.0 to 0.10.7

Docid: enpa-sa-00016

Date: December 15, 2004

Versions affected: 0.9.0 up to and including 0.10.7

Severity: High

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Issues have been discovered in the following protocol dissectors:

    * Matthew Bing discovered a bug in DICOM dissection that could make 
      Ethereal crash.
      Versions affected: 0.10.4 - 0.10.7
      CVE: CAN-2004-1139

    * An invalid RTP timestamp could make Ethereal hang and create a large 
      temporary file, possibly filling available disk space.
      Versions affected: 0.9.16 - 0.10.7
      CVE: CAN-2004-1140

    * The HTTP dissector could access previously-freed memory, causing a 
      Versions affected: 0.10.1 - 0.10.7
      CVE: CAN-2004-1141

    * Brian Caswell discovered that an improperly formatted SMB packet could 
      make Ethereal hang, maximizing CPU utilization.
      Versions affected: 0.9.0 - 0.10.7
      CVE: CAN-2004-1142


It may be possible to make Ethereal crash or run arbitrary code by injecting a 
purposefully malformed packet onto the wire or by convincing someone to read a 
malformed packet trace file.


Upgrade to 0.10.8.

If you are running a version prior to 0.10.8 and you cannot upgrade, you can 
disable the HTTP, DICOM, and SMB protocol dissectors by selecting 
Analyze->Enabled Protocols... and deselecting them from the list. However, it 
is strongly recommended that you upgrade to 0.10.8.

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