Security Advisory SA34329 - Serv-U "MKD" Directory Traversal Vulnerability

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Secunia Advisory SA34329

Serv-U "MKD" Directory Traversal Vulnerability

Secunia Advisory

SA34329

Release Date

2009-03-17

Last Update

2009-03-23

Popularity

3,110 views

Comments

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Criticality level

Not critical

Impact

Security Bypass

Where

From remote

Authentication level

This information is available to Secunia VIM customers

Report reliability

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Solution Status

Unpatched

Systems affected

This information is available to Secunia VIM customers

Approve distribution

This information is available to Secunia VIM customers

Remediation status

Secunia VIM

Software:

Serv-U File Server 7.x

Secunia CVSS Score

This information is available to Secunia VIM Customers

CVE Reference(s)

CVE-2009-1031 CVSS score available to Secunia VIM customers

Description

A vulnerability has been discovered in Serv-U, which can be exploited by malicious users to bypass certain security restrictions.

The vulnerability is caused due to an error when processing "MKD" commands. This can be exploited to create directories residing outside a given user's home directory via directory traversal attacks (e.g "MKD \..\..\[NEW DIRECTORY]").

The vulnerability is confirmed in version 7.4.0.1. Other versions may also be affected.

Solution
Restrict access to trusted users only.

Provided and/or discovered by
Jonathan Salwan

Changelog
Further details available to Secunia VIM customers

Original Advisory
http://milw0rm.com/exploits/8211

Deep Links
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Serv-U "MKD" Directory Traversal Vulnerability

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Secunia Advisory SA34329

Serv-U "MKD" Directory Traversal Vulnerability

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