Secunia Research: PC Tools AntiVirus Insecure Default Directory Permissions

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                     Secunia Research 03/08/2006

    - PC Tools AntiVirus Insecure Default Directory Permissions -

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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 

PC Tools AntiVirus 2.1.0.51.

Other versions may also be affected.

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2) Severity 

Rating: Less critical
Impact: Privilege Escalation
Where:  Local system

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3) Vendor's Description of Software 

"With PC Tools AntiVirus you are protected against the most nefarious
cyber-threats attempting to gain access to your PC and personal
information."

Product Link:
http://www.pctools.com/anti-virus/

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4) Description of Vulnerability

Secunia Research has discovered a security issue in PC Tools AntiVirus,
which can be exploited by malicious, local users to gain escalated
privileges.

The problem is caused due to the application setting insecure default
permissions (grants "Everyone" group "Full Control") on the "PC Tools
AntiVirus" directory and all child objects. This can be exploited to
remove, manipulate, and replace any of the application's files.

Successful exploitation allows execution of arbitrary commands with 
SYSTEM privileges.

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5) Solution 

Grant only trusted users access to affected systems.

Set proper permissions on the directory and all child objects 
(this may impact the functionality).

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6) Time Table 

19/07/2006 - Vendor notified.
02/08/2006 - Vendor notified again.
03/08/2006 - 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-2006-3114 for the vulnerabilities.

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9) About Secunia 

Secunia collects, validates, assesses, and writes advisories regarding 
all the latest software vulnerabilities disclosed to the public. These 
advisories are gathered in a publicly available database at the 
Secunia website:

http://secunia.com/

Secunia offers services to our customers enabling them to receive all 
relevant vulnerability information to their specific system 
configuration. 

Secunia offers a FREE mailing list called Secunia Security Advisories: 

http://secunia.com/secunia_security_advisories/

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2006-51/

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

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