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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel Buffer Overflows in Moxa Char Driver Yield Root Privileges to Local Users
SecurityTracker Alert ID:  1013273
SecurityTracker URL:  http://securitytracker.com/id/1013273
CVE Reference:   CVE-2005-0504   (Links to External Site)
Date:  Feb 23 2005
Impact:   Execution of arbitrary code via local system, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.2, 2.4, 2.6
Description:   Some buffer overflow vulnerabilities were reported in the Linux kernel in the moxa char driver. A local user can execute arbitrary code with root privileges.

The driver does not properly validate the length of certain user-supplied inputs.

The flaws reside in 'drivers/char/moxa.c' in the MoxaDriverIoctl(), moxaloadbios(), moxaloadcode(), and moxaload320b() functions.

This vulnerability was reported in January 2005 by Brad Spengler of grsecurity.

Impact:   A local user can execute arbitrary code with root privileges.
Solution:   Some unofficial patches are available in the original report at:

http://lists.netsys.com/pipermail/full-disclosure/2005-January/030660.html

Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Boundary error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Aug 25 2005 (Red Hat Issues Fix) Linux Kernel Buffer Overflows in Moxa Char Driver Yield Root Privileges to Local Users
Red Hat has released a fix.
Aug 25 2005 (Red Hat Issues Fix) Linux Kernel Buffer Overflows in Moxa Char Driver Yield Root Privileges to Local Users
Red Hat has released a fix.



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