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WinPcap NPF.SYS IOCTL Handler Privilege Escalation Vulnerability

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Release Date:  2007-07-10    Last Update:  2007-07-13    Views:  10,509

Secunia Advisory SA25982

Where:

Local system

Impact:

Privilege escalation

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


A vulnerability has been reported in WinPcap, which can be exploited by malicious, local users to gain escalated privileges.

Insufficient address space verification within the IOCTL 9031 (BIOCGSTATS) handler in NPF.SYS can be exploited to overwrite arbitrary memory and execute code with kernel privileges via specially crafted IRP parameters passed to the affected IOCTL handler.

The vulnerability is reported in version 4.0 included in Wireshark version 0.99.5. Other versions may also be affected.


Solution:
Update to version 4.0.1.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Discovered by Mario Ballano Bárcena, 48bits.com and reported via iDefense Labs.

Original Advisory:
WinPcap:
http://www.winpcap.org/misc/changelog.htm

iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=550

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: WinPcap NPF.SYS IOCTL Handler Privilege Escalation Vulnerability

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