ID: 3357
Date: 23 August 2007 13:06
Title: 3357 - ZoneAlarm vulnerabilties
Abstract: Details of two iDefense Security advisories concerning vulnerabilities in Zone Labs products
Vendors affected:Zone Labs
Applications affected:ZoneAlarm
Warning Status: Imminent
Availability of fix: Available
Type of fix: Patch
Source: IDefense
Reliability of source: Known
Source URL: http://labs.idefense.com/intelligence/vulnerabilities/index.php
CVE: CVE-2005-2932 , CVE-2007-4216
Check Point Zone Labs Multiple Products Privilege Escalation Vulnerability
iDefense Security Advisory 08.20.07
http://labs.idefense.com/intelligence/vulnerabilities/
Aug 20, 2007
I. BACKGROUND
Zone Alarm products provide security solutions such as anti-virus, firewall, spy-ware, and ad-ware protection. More information is available at the Zone Labs web site at the following URL.
http://www.zonelabs.com/
II. DESCRIPTION
Local exploitation of an insecure permission vulnerability in multiple Check Point Zone Labs products allows attackers to escalate privileges or disable protection.
The vulnerability specifically exists in the default file Access Control List (ACL) settings that are applied during installation. When an administrator installs any of the Zone Labs ZoneAlarm tools, the default ACL allows any user to modify the installed files. Some of the programs run as system services. This allows a user to simply replace an installed ZoneAlarm file with their own code that will later be executed with system-level privileges.
III. ANALYSIS
Exploitation allows local attackers to escalate privileges to the system level. It is also possible to use this vulnerability to simply disable protection by moving all of the executable files so that they cannot start on a reboot.
IV. DETECTION
iDefense has confirmed the existence of this vulnerability in ZoneAlarm Security Suite 5.5.062.004 and 6.5.737. It is strongly suspected that other versions of ZoneAlarm and other Zone Labs products are affected by this.
V. WORKAROUND
Apply proper Access Control List settings to the directory that ZoneAlarm Security Suite is installed in. The ACL rules should make sure that no regular users can modify files in the directory.
VI. VENDOR RESPONSE
Check Point Zone Labs has addressed this vulnerability in version
7.0.362 of their ZoneAlarm products. For more information, consult the Check Point Zone Labs download page at the following URL.
http://www.zonealarm.com/store/content/catalog/products/trial_zaFamily/trial_zaFamily.jsp
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2005-2932 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.
VIII. DISCLOSURE TIMELINE
09/29/2005 Initial vendor notification
09/29/2005 Initial vendor response
10/19/2006 Second vendor notification
08/20/2007 Coordinated public disclosure
IX. CREDIT
The discoverer of this vulnerability wishes to remain anonymous.
Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php
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X. LEGAL NOTICES
Copyright © 2007 iDefense, Inc.
Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customerservice@idefense.com for permission.
Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
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Check Point Zone Labs VSDATANT Multiple IOCTL Privilege Escalation Vulnerabilities
iDefense Security Advisory 08.20.07
http://labs.idefense.com/intelligence/vulnerabilities/
Aug 20, 2007
I. BACKGROUND
Zone Alarm products provide security solutions such as anti-virus, firewall, spy-ware, and ad-ware protection. The vsdatant.sys driver, also known as the TrueVector Device Driver, is the core firewall driver in ZoneAlarm products. More information is available at the Zone Labs web site at the following URL.
http://www.zonelabs.com/
II. DESCRIPTION
Local exploitation of multiple input validation vulnerabilities within multiple Check Point Zone Alarm products could allow an attacker to execute arbitrary code in kernel (ring0) context.
The problems specifically exist within the IOCTL handling code in the vsdatant.sys device driver. The device driver fails to validate user-land supplied addresses passed to IOCTL 0x8400000F and IOCTL 0x84000013.
Since the Irp parameters are not correctly validated, an attacker could utilize these IOCTLs to overwrite arbitrary memory with the constant double-word value of 0x60001 or the contents of a buffer returned from ZwQuerySystemInformation. This includes kernel memory as well as the code segments of running processes.
III. ANALYSIS
Exploitation allows an attacker to gain complete control of the affected machine. The access control mechanisms under a default installation allow restricted accounts to access the affected device drivers.
IV. DETECTION
iDefense has confirmed the existence of these vulnerabilities within version 6.5.737.0 of vsdatant.sys as installed with Check Point Zone Labs Zone Alarm Free. All other products within the Zone Alarm product line are suspected to be vulnerable. Previous versions are also suspected to be vulnerable.
V. WORKAROUND
Changing the access control mechanisms for the affected device drivers will prevent exploitation by restricted accounts.
VI. VENDOR RESPONSE
Check Point Zone Labs has addressed these vulnerabilities in version
7.0.362 of their ZoneAlarm products. For more information, consult the Check Point Zone Labs download page at the following URL.
http://www.zonealarm.com/store/content/catalog/products/trial_zaFamily/trial_zaFamily.jsp
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-4216 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.
VIII. DISCLOSURE TIMELINE
12/19/2006 Initial vendor notification
12/20/2006 Initial vendor response
08/20/2007 Coordinated public disclosure
IX. CREDIT
These vulnerabilities were reported to iDefense by Ruben Santamarta of reversemode.com.
Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php
Free tools, research and upcoming events http://labs.idefense.com/
X. LEGAL NOTICES
Copyright © 2007 iDefense, Inc.
Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customerservice@idefense.com for permission.
Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
_______________________________________________
This advisory contains information released by the original author. Some of the information may have changed since it was released. If the issue affects you, it may be prudent to retrieve the advisory from the site of the original source to ensure that you receive the most current information concerning that problem. Reference to any specific commercial product, process, or service by trade name, trademark manufacturer, or otherwise, does not constitute or imply its endorsement, recommendation, or favouring by CPNI.
The views and opinions of authors expressed within this notice shall not be used for advertising or product endorsement purposes. CPNI shall not accept responsibility for any errors or omissions contained within this advisory. In particular, they shall not be liable for any loss or damage whatsoever, arising from or in connection with the usage of information contained within this advisory.
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