KDE Okular PDB Parsing RLE Decompression Buffer Overflow

Advisory Content :

======================================================================

Secunia Research 25/08/2010

- KDE Okular PDB Parsing RLE Decompression Buffer Overflow -

======================================================================
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

======================================================================
1) Affected Software

* KDE Okular 4.4.5

NOTE: Other versions may also be affected.

======================================================================
2) Severity

Rating: Moderately critical
Impact: System access
Where: Remote

======================================================================
3) Vendor's Description of Software

"Okular is a universal document viewer based on KPDF for KDE 4.".

Product Link:
http://okular.kde.org/

======================================================================
4) Description of Vulnerability

Secunia Research has discovered a vulnerability in KDE Okular, which
can be exploited by malicious people to potentially compromise a
user's system.

The vulnerability is caused by a boundary error within the RLE
decompression in the "TranscribePalmImageToJPEG()" function in
generators/plucker/unpluck/image.cpp. This can be exploited to cause
a heap-based buffer overflow by e.g. tricking a user into opening a
specially crafted PDB file.

======================================================================
5) Solution

Apply patches. See the vendor's advisory for additional details.
http://www.kde.org/info/security/advisory-20100825-1.txt

======================================================================
6) Time Table

11/08/2010 - Vendor notified.
11/08/2010 - Vendor response.
25/08/2010 - Public disclosure.

======================================================================
7) Credits

Discovered by Stefan Cornelius, Secunia Research.

======================================================================
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2010-2575 for the vulnerability.

======================================================================
9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:

http://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/corporate/jobs/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

======================================================================
10) Verification

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-109/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

======================================================================

Security

IT News

Search

SecurityAlert Database

About SecurityAlert

ExploitAlert Database

SecurityReason Research

WLB Database

Send to WLB

About WLB

Security Audit

Schedule

Prices of services

Contact

SecurityReason IT News

SecurityAlert

World Laboratory of Bugtraq

ExploitAlert

Apache

PHP

Contact

About SecurityReason

KDE Okular PDB Parsing RLE Decompression Buffer Overflow