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Category:   OS (UNIX)  >   OpenBSD Kernel Vendors:   OpenBSD
OpenBSD Kernel Bug in gertrlimit() Function May Let Local Users Crash the System
SecurityTracker Alert ID:  1005553
SecurityTracker URL:  http://securitytracker.com/id/1005553
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Nov 7 2002
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): OpenBSD 3.0, 3.1
Description:   A denial of service vulnerability was reported in the OpenBSD getrlimit(2) system call. A local user may be able to crash the system.

It is reported that a local user can make a getrlimit(2) system call with specially crafted arguments to cause the kernel to crash. This is due to incorrect argument limits.

Impact:   A local user can crash the kernel.
Solution:   The vendor has released the following kernel patches:

ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/018_kernresource.patch

ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.0/common/035_kernresource.patch

Vendor URL:  www.openbsd.org/ (Links to External Site)
Cause:   Input validation error

Message History:   None.


 Source Message Contents

Subject:  OpenBSD getrlimit2 kernel bug


SECURITY FIX: November 6, 2002

Incorrect argument checking in the getrlimit(2) system call may allow an attacker to crash
the kernel.

A source code patch exists which remedies the problem:

ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/018_kernresource.patch

ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.0/common/035_kernresource.patch



 
 


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