CYBSEC Advisory#2010-0604 InterScan Web Security 5.0 Local Privilege Escalation

["CYBSEC Labs" <cybseclabs () cybsec com>]

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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For more information, please visit www.cybsec.com 

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