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 stack-based buffer overflow in Kaspersky Lab's
Internet Security could allow an attacker to execute arbitrary code in
the context of the kernel.
The kl1.sys kernel driver distributed with Internet Security contains a
stack-based buffer overflow in the handling of IOCTL 0x800520e8. This
issue is caused by a failure to properly perform bounds checks on
user-supplied data that is passed to the swprintf function as a source
buffer. The destination buffer in this case is a 2,000 element
wide-character array. If the source buffer exceeds 2,000 characters, a
buffer overflow will occur leading to the execution of arbitrary code.
III. ANALYSIS
Exploitation of this issue allows an attacker to execute arbitrary code
within the kernel. An attacker would need local access to a vulnerable
computer to exploit this vulnerability.
IV. DETECTION
Kasperky Lab's Internet Security version 7.0.1.325 is confirmed to be
vulnerable to this issue. Previous versions are also suspected to be
vulnerable.
V. WORKAROUND
iDefense is unaware of any workaround for this issue.
VI. VENDOR RESPONSE
Kaspersky Lab has addressed this vulnerability by releasing updated
anti-virus definition databases. For more information, refer the their
article at the following URL.
http://www.kaspersky.com/technews?id=203038727
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2008-1518 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
03/19/2008 Initial vendor notification
03/20/2008 Initial vendor response
06/04/2008 Coordinated public disclosure
IX. CREDIT
This vulnerability was reported to iDefense by Tobias Klein.
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X. LEGAL NOTICES
Copyright © 2008 iDefense, Inc.
Permission is granted for the redistribution of this alert electronically. It may not be edited in
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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.
