05 June 2008
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AUSCERT External Security Bulletin Redistribution
ESB-2008.0584 -- [Win]
Kaspersky Internet Security IOCTL Stack Based Buffer Overflow Vulnerability
5 June 2008
AusCERT Security Bulletin Summary
Product: Kaspersky Internet Security
Operating System: Windows
Impact: Administrator Compromise
Access: Existing Account
CVE Names: CVE-2008-1518
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iDefense Security Advisory 06.04.08
Jun 04, 2008
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.
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 188.8.131.525 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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reliance on, this information.
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