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                         AUSCERT Security Bulletin

                               ASB-2013.0009
     A number of vulnerabilities have been identified in Google Chrome
                              24 January 2013

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

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

Product:              Google Chrome
Operating System:     Windows
                      Linux variants
                      OS X
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-2013-0843 CVE-2013-0842 CVE-2013-0841
                      CVE-2013-0840 CVE-2013-0839 
Member content until: Saturday, February 23 2013

OVERVIEW

        A number of vulnerabilities have been identified in Google Chrome
        prior to version 24.0.1312.56.


IMPACT

        The vendor has provided the following details regarding these issues:
        
        "[$1000] [151008] High CVE-2013-0839: Use-after-free in canvas font 
        handling. Credit to Atte Kettunen of OUSPG.
        [170532] Medium CVE-2013-0840: Missing URL validation when opening new 
        windows.
        [169770] High CVE-2013-0841: Unchecked array index in content blocking. 
        Credit to Google Chrome Security Team (Chris Evans).
        [166867] Medium CVE-2013-0842: Problems with NULL characters embedded 
        in paths. Credit to Google Chrome Security Team (Jri Aedla).
        [Mac only] [166523] High CVE-2013-0843: Crash with unsupported RTC 
        sampling rate. Credit to Ted Nakamura of the Chromium development 
        community." [1]


MITIGATION

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


REFERENCES

        [1] Stable Channel Update
            http://googlechromereleases.blogspot.nl/search/label/Stable%20updates

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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