KDE Okular PDB Parsing RLE Decompression Buffer Overflow

2010.08.31
Risk: Low
Local: No
Remote: No
CWE: CWE-119


Ogólna skala CVSS: 6.8/10
Znaczenie: 6.4/10
Łatwość wykorzystania: 8.6/10
Wymagany dostęp: Zdalny
Złożoność ataku: Średnia
Autoryzacja: Nie wymagana
Wpływ na poufność: Częściowy
Wpływ na integralność: Częściowy
Wpływ na dostępność: Częściowy

====================================================================== 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/ ======================================================================

Referencje:

https://bugzilla.redhat.com/show_bug.cgi?id=627289
http://xforce.iss.net/xforce/xfdb/61371
http://www.vupen.com/english/advisories/2010/2179
http://www.vupen.com/english/advisories/2010/2178
http://www.securityfocus.com/archive/1/archive/1/513341/100/0/threaded
http://www.osvdb.org/67454
http://www.mandriva.com/security/advisories?name=MDVSA-2010:162
http://www.kde.org/info/security/advisory-20100825-1.txt
http://secunia.com/secunia_research/2010-109/
http://secunia.com/advisories/40952
http://lists.fedoraproject.org/pipermail/package-announce/2010-August/046448.html


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