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Secunia Research: eScan Products Agent Service Missing User Authentication

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                     Secunia Research 02/05/2007

    - eScan Products Agent Service Missing User Authentication -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

* eScan 8.0.671.1 

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Less critical
Impact: Security bypass
Where:  Local network

====================================================================== 
3) Vendor's Description of Software 

"eScan is the latest offering from MicroWorld Technologies Inc. It
offers a combination of features to help you fight the threat of
viruses, set security policies for parental control over content
accessed by your child. It guards against Internet misuse, block Spam
and offensive mails and block PopUp Ads.".

Product Link:
http://www.mwti.net/products/escan/escan.asp

====================================================================== 
4) Description of Vulnerability

Secunia Research has discovered a security issue in various eScan
products, which can be exploited by malicious, local users to gain
escalated privileges or by malicious people to manipulate certain
settings or gain knowledge of sensitive information.

The MicroWorld Agent service (MWAGENT.EXE) runs with SYSTEM privileges
and accepts connections from anywhere without implementing an
authentication scheme. This allows anyone to send arbitrary commands
to the service (default port 2222/tcp) resulting in the following:

1) An unprivileged, local user can gain SYSTEM privileges by sending a
SCASYS, SCADRV, or SCAMEM command, which invokes the Anti-Virus 
scanner in a window with SYSTEM privileges. Through this, it is 
possible to execute any command with the privileges of the scanner via
e.g. the "View Log" functionality.

2) It is possible to disable/enable the eScan Anti-Virus Monitor
process via the DISMON and ENAMON commands.

3) An unprivileged, local user can uninstall the product via the
UNISOFT command and clicking "Yes" on a window that pops up on the
user's desktop.

4) It is possible to disclose the contents of arbitrary files on the
system via the SEND command.

5) It is possible to enable/disable the "Restrictive Scanning"
configuration setting via the SLOMOD ("High Security (Slow Mode)") and
FASMOD ("Medium Security (Fast Mode)") commands.

6) It is possible to enable/disable the eScan "File Rights"
configuration setting via the ENFRIG and DIFRIG commands.

7) It is possible to change the server status via the STASER and 
STOSER commands.

8) It is possible to configure the update server via the UPDSET
command.

====================================================================== 
5) Solution 

The vendor has issued Beta3 releases, which fix the security issue.

A final stable release is forthcoming.

====================================================================== 
6) Time Table 

13/02/2007 - Vendor notified.
13/02/2007 - Vendor response.
02/05/2007 - Public disclosure.

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7) Credits 

Discovered by Carsten Eiram, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2007-0655 for the vulnerability.

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://corporate.secunia.com/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private 
individuals, who are interested in or concerned about IT-security.

http://secunia.com/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://corporate.secunia.com/secunia_research/33/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/secunia_vacancies/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/ 

====================================================================== 
10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-45/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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