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             AUSCERT External Security Bulletin Redistribution

                               ESB-2013.0647
     Security Bulletin: IBM Notes PNG integer overflow (CVE-2013-2977)
                                8 May 2013

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

Product:           IBM Notes
Publisher:         IBM
Operating System:  Linux variants
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2013-2977  

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=swg21635878

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Security Bulletin: IBM Notes PNG integer overflow (CVE-2013-2977)

Flash (Alert)

Document information

IBM Notes

Software version:
8.5, 8.5.1, 8.5.2, 8.5.3, 9.0

Operating system(s):
Linux, Windows

Reference #:
1635878

Modified date:
2013-05-06

Abstract

IBM Notes has an integer overflow vulnerability which may be triggered by 
viewing a malformed PNG image.

Content

CVE ID: CVE-2013-2977

DESCRIPTION:
IBM Notes has an integer overflow vulnerability which may be triggered by 
viewing a malformed PNG image.

An integer overflow can occur resulting in allocation of less memory than 
expected. An attacker can construct specially crafted input that allows 
complete control of the application, resulting in arbitrary code execution.

Because this can be triggered by simply viewing an email in the preview 
window, it can be exploited without any interaction required.


CVE ID: CVE-2013-2977
CVSS Base Score: 6.8
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/83967 for the 
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P)

AFFECTED PLATFORMS:
IBM Notes 8.5.x, 9.0

REMEDIATION:

Fix:
This issue is being tracked as SPR NPEI96K82Q. The Windows fix is included in 
Interim Fix 1 for Notes 8.5.3 Fix Pack 4 and Interim Fix 1 for Notes 9.0.

For Linux, clients are encouraged to monitor fix availability in 8.5.3 Fix 
Pack 5 and 9.0.1. Or to inquire about the possibility of obtaining a fix 
sooner, open a service request with IBM Support.

Workaround:
None

Mitigation:
Disabling JavaScript in Notes will make it more difficult to exploit the 
vulnerability, but does not prevent the vulnerability from being triggered.

REFERENCES:
Complete CVSS Guide
On-line Calculator V2
CVE-2013-2977
http://xforce.iss.net/xforce/xfdb/83967

RELATED INFORMATION:
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

ACKNOWLEDGEMENT
This vulnerability was reported to IBM by Lagarto of the Binamuse VRT, via 
the iSIGHT Partners GVP Program

Copyright and trademark information

IBM, the IBM logo and ibm.com are trademarks of International Business 
Machines Corp., registered in many jurisdictions worldwide. Other product and 
service names might be trademarks of IBM or other companies. A current list of
IBM trademarks is available on the Web at "Copyright and trademark information" 
at www.ibm.com/legal/copytrade.shtml.

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