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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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