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To improve our services to our customers, we have made a number of
additions to the Secunia Advisories and have started translating the
advisories to German.

The improvements will help our customers to get a better
understanding of how we reached our conclusions, how it was rated,
our thoughts on exploitation, attack vectors, and scenarios.

This includes:
* Reason for rating
* Extended description
* Extended solution
* Exploit code or links to exploit code
* Deep links

Read the full description:
http://corporate.secunia.com/products/48/?r=l

Contact Secunia Sales for more information:
http://corporate.secunia.com/how_to_buy/15/?r=l

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TITLE:
KOffice PowerPoint Files Integer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA23143

VERIFY ADVISORY:
http://secunia.com/advisories/23143/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
KOffice 1.x
http://secunia.com/product/4155/

DESCRIPTION:
A vulnerability has been reported in KOffice, which can be exploited
by malicious people to potentially compromise a user's system.

The vulnerability is caused due to an integer overflow within the
"KLaola::readBigBlockDepot()" method in
filters/olefilters/lib/klaola.cc. This can be exploited to cause a
heap-based buffer overflow by e.g. tricking a user into opening a
specially crafted PowerPoint (*.ppt) file.

Successful exploitation may allow the execution of arbitrary code.

SOLUTION:
Update to KOffice 1.6.1.

PROVIDED AND/OR DISCOVERED BY:
Reported in an Ubuntu Advisory.

ORIGINAL ADVISORY:
http://www.koffice.org/announcements/changelog-1.6.1.php

http://websvn.kde.org/branches/koffice/1.6/koffice/filters/olefilters/lib/klaola.cc?rev=607037&r1=566347&r2=607037

OTHER REFERENCES:
http://www.ubuntu.com/usn/usn-388-1

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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http://secunia.com/about_secunia_advisories/


Please Note:
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Secunia NEVER sends attached files with advisories.
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