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CYBSEC Advisory#2010-0604 InterScan Web Security 5.0 Local Privilege Escalation
From: "Cybsec - Security Systems" <capacitacion () cybsec com>
Date: Wed, 23 Jun 2010 11:37:49 -0300
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
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.
* In order to run commands as root:
Any user, can escalate privileges and execute arbitrary commands with root user rights.
Apply the patch that can be found in
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
For more information regarding the vulnerability feel free to contact the researcher at
ihuertas <at> cybsec <dot> com
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