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Category:   OS (UNIX)  >   NetBSD Vendors:   NetBSD
NetBSD netsmb Filesystem Buffer Limit Error Lets Local Users Consume Excessive Memory
SecurityTracker Alert ID:  1024628
SecurityTracker URL:  http://securitytracker.com/id/1024628
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Oct 22 2010
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.0, 4.0.1, 5.0, 5.0.2
Description:   A vulnerability was reported in NetBSD. A local user can cause denial of service conditions.

A local user can supply specially crafted ioctl SMBIOC_OPENSESSION values to allocate large internal buffers and exhaust all available memory on the target system.

Kernels that contain 'file-system SMBFS' and 'pseudo-device nsmb' in their config are affected.

Dan J. Rosenberg reported this vulnerability.

Impact:   A local user can consume excessive memory on the target system.
Solution:   The vendor has issued a fix.

The vendor's advisory is available at:

http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2010-010.txt.asc

Vendor URL:  ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2010-010.txt.asc (Links to External Site)
Cause:   Input validation error

Message History:   None.


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