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Category:   Application (Generic)  >   Apache OpenOffice Vendors:   Apache Software Foundation, OpenOffice.org
OpenOffice.org Integer Overflow in 'vclmi.dll' Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1027068
SecurityTracker URL:  http://securitytracker.com/id/1027068
CVE Reference:   CVE-2012-1149   (Links to External Site)
Updated:  May 16 2012
Original Entry Date:  May 16 2012
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.3 and 3.4 Beta; possibly earlier versions
Description:   A vulnerability was reported in OpenOffice.org. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted file that, when loaded by the target user, will trigger an integer overflow in 'vclmi.dll' and execute arbitrary code on the target system. The code will run with the privileges of the target user.

A DOC file with a specially crafted embedded JPEG object can trigger the overflow.

Tielei Wang reported this vulnerability via Secunia SVCRP.

Impact:   A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fix (3.4).

The vendor's advisory is available at:

http://www.openoffice.org/security/cves/CVE-2012-1149.html

Vendor URL:  www.openoffice.org/security/cves/CVE-2012-1149.html (Links to External Site)
Cause:   Boundary error
Underlying OS:   Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jun 5 2012 (Red Hat Issues Fix) OpenOffice.org Integer Overflow in 'vclmi.dll' Lets Remote Users Execute Arbitrary Code   (bugzilla@redhat.com)
Red Hat has issued a fix for Red Hat Enterprise Linux 5 and 6.



 Source Message Contents

Date:  Wed, 16 May 2012 11:03:23 -0400
Subject:  [Full-disclosure] CVE-2012-1149 OpenOffice.org integer overflow error in vclmi.dll module when allocating memory for an embedded image object

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

CVE-2012-1149 OpenOffice.org integer overflow error in vclmi.dll module
when allocating memory for an embedded image object

Reference: http://www.openoffice.org/security/cves/CVE-2012-1149.html

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:

OpenOffice.org 3.3 and 3.4 Beta, on all platforms.
Earlier versions may be also affected.

Description:

The vulnerability is caused due to an integer overflow error in the
vclmi.dll module when allocating memory for an embedded image object.
This can be exploited to cause a heap-based buffer overflow via, for
example using a specially crafted JPEG object within a DOC file.

Mitigation

OpenOffice.org 3.3.0 and 3.4 beta users are advised to upgrade to
Apache OpenOffice 3.4. Users who are unable to upgrade immediately
should be cautious when opening untrusted documents.

Credits

The Apache OpenOffice Security Team credits Tielei Wang via
Secunia SVCRP as the discoverer of this flaw.
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_______________________________________________
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Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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