Secunia Research: KDE Okular PDB Parsing RLE Decompression Buffer Overflow

2010-08-30T00:00:00
ID SECURITYVULNS:DOC:24640
Type securityvulns
Reporter Securityvulns
Modified 2010-08-30T00:00:00

Description

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                 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/

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