Kaspersky Internet Security IOCTL Stack Overflow Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID: 1020195|
SecurityTracker URL: http://securitytracker.com/id/1020195
(Links to External Site)
Date: Jun 4 2008
Execution of arbitrary code via local system, User access via local system|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): 6.0, 7.0; Tested on 22.214.171.1245|
A vulnerability was reported in Kaspersky Internet Security. A local user can obtain elevated privileges on the target system.|
A local user can supply a specially crafted IOCTL command to the 'kl1.sys' kernel driver to trigger a stack overflow to execute arbitrary code on the target system with kernel level privileges.
IOCTL 0x800520e8 is affected.
The vendor was notified on March 19, 2008.
Tobias Klein reported this vulnerability via iDefense.
A local user can obtain elevated privileges on the target system.|
The vendor has issued a fix, available via automatic update.|
The vendor's advisory is available at:
Vendor URL: www.kaspersky.com/technews?id=203038727 (Links to External Site)
Source Message Contents
Date: Wed, 04 Jun 2008 13:00:50 -0400|
Subject: iDefense Security Advisory 06.04.08: Kaspersky Internet Security
iDefense Security Advisory 06.04.08
Jun 04, 2008
aspersky 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.
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.
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.
Kasperky Lab's Internet Security version 126.96.36.1995 is confirmed to be
vulnerable to this issue. Previous versions are also suspected to be
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.
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
VIII. DISCLOSURE TIMELINE
03/19/2008 Initial vendor notification
03/20/2008 Initial vendor response
06/04/2008 Coordinated public disclosure
This vulnerability was reported to iDefense by Tobias Klein.
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