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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.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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