[Full-disclosure] CYBSEC Advisory#2010-0604 InterScan Web Security 5.0 Local Privilege Escalation

["CYBSEC Labs" <cybseclabs@xxxxxxxxxx>]

Advisory Name: Local Privilege Escalation in InterScan Web Security Virtual 
Apliance 5.0
 

Internal Cybsec Advisory Id: 2010-0604

 

Vulnerability Class: Local Privilege Escalation

 

Release Date: 22-06-2010

 

Affected Applications: InterScan Web Security Virtual Aplliance 5.0. Other 
versions may be affected 

 

Affected Platforms: Red Hat nash 5.1

 

Local / Remote: Local 

 

Severity:  Medium - CVSS: 6.8 (AV:L/AC:L/Au:S/C:C/I:C/A:C)

 

Researcher: Ivan Huertas 

 

Vendor Status: Patched

 

Reference to Vulnerability Disclosure Policy: 
http://www.cybsec.com/vulnerability_policy.pdf

 

Vulnerability Description: 

 

InterScan Web Security Virtual Appliance has a shell called "uihelper" that has 
suid bit on. So it could be possible to execute commands as root. Also using 
the vulnerability "Arbitrary File Upload" remote  commands could be run as 
root. 

 

Exploit: 

 

* In order to run commands as root:

 

$/usr/iwss/AdminUi/uihelper whoami

 

Impact:

 

Any user, can escalate privileges and execute arbitrary commands with root user 
rights. 

 

Solution: 

 

Apply the patch that can be found in 


http://downloadcenter.trendmicro.com/index.php?clk=tbl&clkval=249&regs=NABU&lang_loc=1

 



Vendor Response:

 

2009-03-26 - Vulnerability was identified

2010-04-09 - Vendor contacted

2010-04-15 - Vendor response

2010-06-21 - Vendor released fixed version

2010-06-22 - Vulnerability published

 

Contact Information:

 

For more information regarding the vulnerability feel free to contact the 
researcher at 

ihuertas <at> cybsec <dot> com

 

 

About CYBSEC S.A. Security Systems 

 

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specialized in Computer Security. More than 150 clients around the globe 
validate our quality and professionalism. 

 

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Our services are strictly focused on Information Security, protecting our 
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Beyond professional services, CYBSEC is continuously researching new defense 
and attack techniques and contributing with the security community with high 
quality information exchange. 

 

For more information, please visit www.cybsec.com 

(c) 2010 - CYBSEC S.A. Security Systems 

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