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UNIRAS Brief - 434/05 - AusCERT - Frame Spoofing Vulnerability in Multiple Web Browsers [AA-2005.006]



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 434/05 dated 08.06.05  Time: 16:15  
  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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AusCERT - Frame Spoofing Vulnerability in Multiple Web Browsers  [AA-2005.006] 

Detail
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===========================================================================
AA-2005.006                  AUSCERT Advisory

           Frame Spoofing Vulnerability in Multiple Web Browsers
                                8 June 2005

Last Revised: --
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        AusCERT Alert Summary
        ---------------------

Product:           Microsoft Internet Explorer (Windows and Mac)
                   Mozilla
                   Firefox
                   Netscape
                   Opera
                   Konqueror
                   Camino
                   Safari
Operating System:  Windows
                   Linux variants
                   UNIX variants
                   Mac OS
Impact:            Provide Misleading Information
                   Access Privileged Data
Access:            Remote/Unauthenticated

Ref:                AL-2004.041

OVERVIEW:

    A frame spoofing vulnerability dating from 1999 has been found [1] to have
    reemerged in several popular web browsers. The vulnerability allows one
    website to alter the contents of any frames on another website that is
    being concurrently viewed.


AFFECTED APPLICATIONS:

    This vulnerability can be found in a wide range of modern browsers,
    including Internet Explorer (both for Windows and for Mac), Firefox,
    Mozilla, Netscape, Opera, Konqueror, Camino and Safari.

    Secunia has set up a test page so you can check if your browser is
    affected. It can be found at:

      http://secunia.com/multiple_browsers_frame_injection_vulnerability_test/


IMPACT:

    If a user is veiwing a trusted website while viewing another malicious
    website, the malicious website can masquerade as the trusted website.
    The most obvious use for such an attack would be to gather financial and
    identity information in a 'phishing' attack.
    

MITIGATION:

    Until patches are released, it is recommended that users do not browse
    to other websites while viewing trusted or secure websites using the same
    browser.

    Before visiting a trusted web site, first shut down the web browser by 
    closing all browser windows. 


REFERENCES:

    [1] http://secunia.com/advisories/11978/


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:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@xxxxxxxxxxxxxx
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.
===========================================================================

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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 
EMail to: uniras@xxxxxxxxxxxx

Office Hours:
Mon - Fri: 08:30 - 17:00 Hrs
Tel: +44 (0) 870 487 0748 Ext 4511
Fax: +44 (0) 870 487 0749

Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 870 487 0748 and follow the prompts

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UNIRAS wishes to acknowledge the contributions of AusCERT 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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