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Aspen 0.8 Directory Traversal

Aspen 0.8 Directory Traversal
Posted Apr 1, 2013
Authored by Daniel Ricardo dos Santos

Aspen version 0.8 suffers from a directory traversal vulnerability.

tags | exploit, file inclusion
advisories | CVE-2013-2619
MD5 | 19db7a9aaefd7b5fc7aa302af765c758

Aspen 0.8 Directory Traversal

Change Mirror Download
Aspen 0.8 - Directory Traversal
Earlier versions are also possibly vulnerable.

INFORMATION

Product: Aspen 0.8
Remote-exploit: yes
Vendor-URL: http://www.zetadev.com/software/aspen/

Discovered by: Daniel Ricardo dos Santos
CVE Request - 15/03/2013
CVE Assign - 18/03/2013
CVE Number - CVE-2013-2619
Vendor notification - 18/03/2013
Vendor reply - No reply
Public disclosure - 01/04/2013

OVERVIEW

Aspen 0.8 is vulnerable to a directory traversal.

INTRODUCTION

Aspen is a Python webserver.
Aspen is framework-agnostic and relies heavily on WSGI.
Aspen is fast enough.

VULNERABILITY DESCRIPTION

The vulnerability happens when directory indexing is turned on (default
configuration in this version) and a user requests, for instance
localhost/../../../../../../../etc/passwd.

The vulnerability may be tested with the following command-line:
curl -v4 http://<server>:<port>/../../../../../../etc/passwd

VERSIONS AFFECTED

Tested with version 0.8 but earlier versions are possibly vulnerable.

SOLUTION

Upgrade to version 0.22 - http://aspen.io/

NOTES

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2013-2619 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
security problems.

CREDITS

Daniel Ricardo dos Santos
SEC+ Information Security Company - http://www.secplus.com.br/

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