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Free Download Manager metalink "name" Directory Traversal

Free Download Manager metalink "name" Directory Traversal
Posted May 14, 2010
Authored by Stefan Cornelius | Site secunia.com

Secunia Research has discovered a vulnerability in Free Download Manager, which can be exploited by malicious people to compromise a user's system. The "name" attribute of the "file" element of metalink files is not properly sanitised before being used 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. Free Download Manager version 3.0 build 850 is affected.

tags | advisory
advisories | CVE-2010-0999
MD5 | 6a6ed6b4d16c3e2e5da57f216df52d68

Free Download Manager metalink "name" Directory Traversal

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

Secunia Research 13/05/2010

- Free Download Manager metalink "name" Directory Traversal -

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

* Free Download Manager version 3.0 build 850.

NOTE: Other versions may also be affected.

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

Rating: Moderately critical
Impact: System access
Where: Remote

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

"What is Free Download Manager? It is a powerful, easy-to-use and
absolutely free download accelerator and manager. Moreover, FDM is
100% safe, open-source software distributed under GPL license.".

Product Link:
http://www.freedownloadmanager.org/

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

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

The "name" attribute of the "file" element of metalink files is not
properly sanitised before being used 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

Update to version 3.0 build 852.

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

21/04/2010 - Vendor notified.
26/04/2010 - 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-2010-0999 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/2010-67/

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

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

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