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                     Secunia Research 13/05/2010

   - KDE KGet metalink "name" Directory Traversal Vulnerability -

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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

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1) Affected Software 

* KDE 4.4.2 (KGet 2.4.2)

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Moderately critical
Impact: System access
Where:  Remote

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3) Vendor's Description of Software 

"KGet is the download manager for KDE".

Product Link:
http://www.kde.org/applications/internet/kget/ 

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4) Description of Vulnerability

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

The vulnerability is caused due to KGet not properly sanitising the 
"name" attribute of the "file" element of metalink files before using 
it to download files. If a user is tricked into downloading from a 
specially crafted metalink file, this can be exploited to download 
files to directories outside of the intended download directory via 
directory traversal attacks.

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5) Solution 

Apply patches for the 4.3 and 4.4 branches committed to the KDE 
Subversion repository.

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6) Time Table 

30/04/2010 - Vendor notified.
02/05/2010 - Vendor response.
13/05/2010 - Public disclosure.

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7) Credits 

Discovered by Stefan Cornelius, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2010-1000 for the vulnerability.

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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/ 

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-69/ 

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

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