Secunia Research: Visnetic AntiVirus Plug-in for MailServer Privilege Escalation

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                 Secunia Research 23/02/2006

• Visnetic AntiVirus Plug-in for MailServer Privilege Escalation -

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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

Visnetic AntiVirus Plug-in for MailServer 4.6.0.4 and 4.6.1.1.

NOTE: 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

"The best means of protecting your organization from email-propagated
viruses is antivirus protection for your mail server. The VisNetic
AntiVirus Plug-in is tightly integrated antivirus protection designed
specifically for VisNetic Mail Server.".

Product Link:
http://www.deerfield.com/products/visnetic-mailserver/antivirus/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Visnetic AntiVirus
Plug-in for MailServer, which can be exploited by malicious, local
users to gain escalated privileges.

The vulnerability is caused due to the Visnetic AntiVirus Plug-in
(DKAVUpSch.exe) not dropping its privileges before invoking other
programs. This can be exploited to invoke arbitrary programs on the
system with SYSTEM privileges.

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5) Solution

Update to version 4.6.1.2.

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6) Time Table

07/09/2005 - Vendor notified (1st notice).
07/02/2006 - Vendor notified (2nd notice).
21/02/2006 - Vendor notified (3rd notice).
21/02/2006 - Vendor response.
23/02/2006 - Public disclosure.

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7) Credits

Discovered by Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2006-0812 for the vulnerability.

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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/2005-65/

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

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