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Category:   OS (UNIX)  >   NetBSD Vendors:   NetBSD
NetBSD hack(6) Buffer Overflows Let Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1022485
SecurityTracker URL:  http://securitytracker.com/id/1022485
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jul 1 2009
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.0, 4.0.1, 5.0
Description:   A vulnerability was reported in NetBSD hack(6). A local user can obtain elevated privileges on the target system.

A local user can trigger a buffer overflow to execute arbitrary code on the target system with "games" group privileges.

The user can set a specially crafted PATH environment variable value to trigger a stack overflow in the gethdate() function.

The user can set a specially crafted GENOCIDED environment variable value to trigger a buffer overflow in the main() function when in wizard mode.

David A. Holland reported this vulnerability.

Impact:   A local user can obtain "games" group privileges 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-SA2009-007.txt.asc

Vendor URL:  ftp.NetBSD.org/pub/NetBSD/security/advisories/NetBSD-SA2009-007.txt.asc (Links to External Site)
Cause:   Boundary error

Message History:   None.


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