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KDE KGet metalink "name" Directory Traversal Vulnerability

KDE KGet metalink "name" Directory Traversal Vulnerability
Posted May 14, 2010
Authored by Stefan Cornelius | Site secunia.com

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. KDE version 4.4.2 is affected.

tags | advisory
advisories | CVE-2010-1000
MD5 | 3305045279517e7f1a37b710180a597d

KDE KGet metalink "name" Directory Traversal Vulnerability

Change Mirror Download
====================================================================== 

Secunia Research 13/05/2010

- KDE KGet metalink "name" Directory Traversal Vulnerability -

======================================================================
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 4.4.2 (KGet 2.4.2)

NOTE: Other versions may also be affected.

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

Rating: Moderately critical
Impact: System access
Where: Remote

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

"KGet is the download manager for KDE".

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

======================================================================
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.

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

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

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

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

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

Discovered by Stefan Cornelius, Secunia Research.

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

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2010-1000 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/2010-69/

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

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

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