33851 : Kaspersky Multiple Products klif.sys Local Overflow
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Disclosure Date
Time to Vendor Response
37 days


A local overflow exists in Kaspersky Anti-Virus. The_NtSetValueKey() function in the klif.sys file fails to properly parse the data size argument resulting in a kernel heap overflow. With a specially crafted request, an attacker can cause corruption of kernel memory and may let an attacker overwrite a nearly arbitrary amount of kernel heap memory with arbitrary data resulting in a loss of integrity.


Location: Local Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Private
OSVDB: Security Software


Upgrade to version or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.


Kaspersky Lab ZAO
Kaspersky Anti-Virus for Windows Workstations
Kaspersky Anti-Virus for Windows File Servers


Tools & Filters



CVSSv2 Score

CVSSv2 Base Score = 6.6
Source: nvd.nist.gov | Generated: 2007-04-09 | Disagree?

Access_vector_0 Access_complexity_1 Authentication_1 Confidentiality_impact_2 Integrity_impact_2 Availability_impact_2


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