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                         AUSCERT Security Bulletin

                               ASB-2012.0175
     A number of vulnerabilities have been identified in Google Chrome
                             13 December 2012

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Google Chrome
Operating System:     Windows
                      OS X
                      Linux variants
Impact/Access:        Execute Arbitrary Code/Commands -- Remote with User Interaction
                      Denial of Service               -- Remote with User Interaction
                      Reduced Security                -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2012-5144 CVE-2012-5143 CVE-2012-5142
                      CVE-2012-5141 CVE-2012-5140 CVE-2012-5139
Member content until: Saturday, January 12 2013
Reference:            ESB-2012.1180

Comment: Google has stated that this build of Chrome also contains a new 
         version of Adobe Flash.

OVERVIEW

        A number of vulnerabilities have been identified in Google Chrome
        prior to version 23.0.1271.97. [1]


IMPACT

        The vendor has provided the following details regarding these 
        vulnerabilities:
        
        "[$1500] [158204] High CVE-2012-5139: Use-after-free with visibility
        events. Credit to Chamal de Silva. 
        [$1000] [159429] High CVE-2012-5140: Use-after-free in URL loader. 
        Credit to Chamal de Silva. 
        [160456] Medium CVE-2012-5141: Limit Chromoting client plug-in 
        instantiation. Credit to Google Chrome Security Team (Jri Aedla). 
        [160803] Critical CVE-2012-5142: Crash in history navigation. Credit to 
        Michal Zalewski of Google Security Team. 
        [160926] Medium CVE-2012-5143: Integer overflow in PPAPI image 
        buffers. Credit to Google Chrome Security Team (Cris Neckar). 
        [$2000] [161639] High CVE-2012-5144: Stack corruption in AAC 
        decoding. Credit to pawlkt." [1]


MITIGATION

        The vendor recommends updating to the latest version of Google Chrome
        to correct these issues. [1]


REFERENCES

        [1] Stable Channel Update
            http://googlechromereleases.blogspot.com.au/2012/12/stable-channel-update.html

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.

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

Internet Email: auscert@auscert.org.au
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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