Secunia Research: aria2 metalink "name" Directory Traversal Vulnerability

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                 Secunia Research 13/05/2010

 - aria2 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

• aria2 1.9.1 build2

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

"aria2 is a lightweight multi-protocol & multi-source, cross platform
download utility operated in command-line.".

Product Link:
http://aria2.sourceforge.net/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in aria2, which can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to the application 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

Update to version 1.9.3.

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6) Time Table

30/04/2010 - Vendor notified.
01/05/2010 - 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-2010-1512 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/2010-71/

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

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