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[security-alerts] FW: iDefense Security Advisory 04.04.07: Kaspersky Internet Security Suite klif.sys Heap Overflow Vulnerability



> -----Original Message-----
> From: full-disclosure-bounces@xxxxxxxxxxxxxxxxx 
> [mailto:full-disclosure-bounces@xxxxxxxxxxxxxxxxx] On Behalf 
> Of iDefense Labs
> Sent: Thursday, April 05, 2007 3:38 AM
> To: vulnwatch@xxxxxxxxxxxxx; 
> full-disclosure@xxxxxxxxxxxxxxxxx; bugtraq@xxxxxxxxxxxxxxxxx
> Subject: [Full-disclosure] iDefense Security Advisory 
> 04.04.07: Kaspersky Internet Security Suite klif.sys Heap 
> Overflow Vulnerability
> 
> Kaspersky Internet Security Suite klif.sys Heap Overflow Vulnerability
> 
> iDefense Security Advisory 04.03.07
> http://labs.idefense.com/intelligence/vulnerabilities/
> Apr 03, 2007
> 
> I. BACKGROUND
> 
> Kaspersky Internet Security Suite is a combination of Kaspersky
> anti-virus, anti-spam, and personal firewall in one product. For more
> information see the vendor's website at the following URL.
> 
> http://www.kaspersky.com/
> 
> II. DESCRIPTION
> 
> Local exploitation of a heap overflow vulnerability in Kaspersky Lab's
> Internet Security Suite klif.sys could allow an attacker to execute
> arbitrary code within kernel context.
> 
> The klif.sys driver is part of the "anti-hacker" proactive protection.
> As part of this defense, the driver hooks and screens various system
> calls, such as registry functions.
> 
> The hook function for the _NtSetValueKey() function is 
> vulnerable to an
> integer overflow that leads to a kernel heap overflow. Passing a large
> unsigned value for the data size argument results in an arithmetic
> overflow when calculating the amount of memory to allocate. A copy
> operation into this buffer results in corruption of kernel memory.
> 
> III. ANALYSIS
> 
> Exploitation allows an attacker to execute code with kernel 
> privileges.
> 
> This vulnerability lets an attacker overwrite a nearly 
> arbitrary amount
> of kernel heap memory with arbitrary data. Exploitation of kernel heap
> based buffer overflows is both difficult and unreliable. 
> However, there
> are documented methods for exploiting these types of overflows.
> 
> IV. DETECTION
> 
> iDefense confirmed this vulnerability in Kaspersky Internet Security
> 6.0.1.411 for Windows. Previous versions may also be affected.
> 
> V. WORKAROUND
> 
> iDefense is currently unaware of any workarounds for this issue.
> 
> VI. VENDOR RESPONSE
> 
> Kaspersky has addressed this vulnerability within Maintenance Pack 2.
> More information is available from the vendor's advisory at the
> following URLs.
> 
> http://www.kaspersky.com/technews?id=203038693
> 
> http://www.kaspersky.com/technews?id=203038694
> 
> VII. CVE INFORMATION
> 
> A Mitre Corp. Common Vulnerabilities and Exposures (CVE) 
> number has not
> been assigned yet.
> 
> VIII. DISCLOSURE TIMELINE
> 
> 01/24/2007  Initial vendor notification
> 03/02/2007  Second vendor notification
> 03/05/2007  Initial vendor response
> 04/03/2007  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
> 
> Free tools, research and upcoming events
> http://labs.idefense.com/
> 
> X. LEGAL NOTICES
> 
> Copyright (c) 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@xxxxxxxxxxxx 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.
> 
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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> 



 




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