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AL-2007.0121 -- [Win] -- New vulnerabilities in Apple QuickTime may allow remote execution of arbitrary code

Date: 03 December 2007

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A  U  S  C  E  R  T                                           A  L  E  R  T

                       AL-2007.0121 -- AUSCERT ALERT
          New vulnerabilities in Apple QuickTime may allow remote
                        execution of arbitrary code
                              3 December 2007


        AusCERT Alert Summary

Product:              Apple QuickTime 7.3
                      Apple QuickTime 7.2
Operating System:     Windows Vista
                      Windows XP SP2
Impact:               Execute Arbitrary Code/Commands
                      Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-4674
Member content until: Monday, December 24 2007

Revision History:      December 3 2007: Added CVE Reference
                      November 26 2007: Initial Release


        A vulnerability [1] has been identified in Apple QuickTime 7.3 and
        7.2 that may allow a remote attacker to execute arbitrary code.


        If someone with Quicktime 7.3 or 7.2 installed on a Windows Vista
        or XP SP2 machine were to open a malicious QuickTime file or visit
        a website with an embedded QuickTime file an attacker may send
        malformed data back to QuickTime that will cause it to either crash
        or execute arbitrary code.

        Such links to malicious QuickTime files could be included in an 
        IFrame and not visible to an unsuspecting visitor.


        A buffer overflow appears to exist in the Content-Type parsing of
        the QuickTime RTSP module. While buffer overflow protection is used
        by QuickTime, it appears the particular affected module does not use
        this protection.

        AusCERT recommends following guidelines from our "Protecting your
        computer from malicious code" [2], and excersising caution when
        opening Apple QuickTime files. QuickTime should also be configured
        to not automatically open embedded QuickTime media in web pages.

        The 'kill bit' can also be set for the QuickTime ActiveX control to
        prevent Internet Explorer from opening or playing QuickTime movies
        completely. The CLSID for QuickTime is:


        More information on setting the kill bit for ActiveX controls can be
        found in Microsoft Knowledge Base Article 240797 [3].


        [1] US-CERT Current Activity

        [2] Protecting your computer from malicious code

        [3] How to stop an ActiveX control from running in Internet Explorer

AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email:
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.