Date: Tue, 22 Oct 2002 08:54:13 -0400 (EDT)
From: EnGarde Secure Linux <security@guardiandigital.com>
To: engarde-security@guardiandigital.com, bugtraq@securityfocus.com
Subject: [ESA-20021022-026] local kernel vulnerabilities
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+------------------------------------------------------------------------+
| EnGarde Secure Linux Security Advisory October 22, 2002 |
| http://www.engardelinux.org/ ESA-20021022-026 |
| |
| Package: kernel |
| Summary: local vulnerabilities. |
+------------------------------------------------------------------------+
EnGarde Secure Linux is a secure distribution of Linux that features
improved access control, host and network intrusion detection, Web
based secure remote management, complete e-commerce using AllCommerce,
and integrated open source security tools.
OVERVIEW
- --------
There are several potentially exploitable local vulnerabilities in the
Linux kernel. During a code audit several sign handling, math
overflow, and other vulnerabilities were fixed. These fixes were made
in 2.2.22-rc1 and have been backported to our kernel.
Thanks to Silvio Cesare and Solar Designer for discovering and fixing
these vulnerabilities.
All users are recommended to upgrade immediately using the special
SOLUTION in this advisory.
SOLUTION
- --------
Users of the EnGarde Professional edition can use the Guardian Digital
Secure Network to update their systems automatically.
EnGarde Community users should upgrade to the most recent version
as outlined in this advisory. Updates may be obtained from:
ftp://ftp.engardelinux.org/pub/engarde/stable/updates/http://ftp.engardelinux.org/pub/engarde/stable/updates/
Please read and understand this entire section before you attempt to
upgrade the kernel.
Initial Steps
-------------
1) Verify the machine is either:
a) booted into a "standard" kernel; or
b) LIDS is disabled (/sbin/lidsadm -S -- -LIDS_GLOBAL)
2) Determine which kernels you currently have installed:
# rpm -qa --qf "%{NAME}\n" | grep kernel
3) Download the new kernels that match what you have installed
(based on step 2) from the "UPDATED PACKAGES" section of this
advisory.
Installation Steps
------------------
4) Install the new packages. The packages will automagically
update /etc/lilo.conf by commenting out any old EnGarde images
and replacing them with the new ones:
# rpm --replacefiles -i <kernel 1> <kernel 2> ...
5) Re-run LILO. If you see any errors then open /etc/lilo.conf in
your favorite text editor and make the appropriate changes:
# /sbin/lilo
Final Steps
-----------
6) If you did not see any LILO errors then your new kernel is now
installed and your machine is ready to be rebooted:
# reboot
UPDATED PACKAGES
- ----------------
These updated packages are for EnGarde Secure Linux Community
Edition.
Source Packages:
SRPMS/kernel-2.2.19-1.0.28.src.rpm
MD5 Sum: 71843bb8f162d56ae14e499ccaa8a4e1
Binary Packages:
i386/kernel-2.2.19-1.0.28.i386.rpm
MD5 Sum: ef33bde310550948f4548e3622c9e7cb
i386/kernel-lids-mods-2.2.19-1.0.28.i386.rpm
MD5 Sum: 8b0c3b8e2d3ee4df9b028c1e53e2ca86
i386/kernel-smp-lids-mods-2.2.19-1.0.28.i386.rpm
MD5 Sum: cad473075eef2491100d48017c275687
i386/kernel-smp-mods-2.2.19-1.0.28.i386.rpm
MD5 Sum: 89cb4cb58b4ef42a0b7d06b9148ed249
i686/kernel-2.2.19-1.0.28.i686.rpm
MD5 Sum: c35310e49a2ac1afdfa926f10ecbbdc6
i686/kernel-lids-mods-2.2.19-1.0.28.i686.rpm
MD5 Sum: 9ec5ef1f8c0603f351978ed6c9723f51
i686/kernel-smp-lids-mods-2.2.19-1.0.28.i686.rpm
MD5 Sum: 19849ab6f20fb8215249e90e7cf00416
i686/kernel-smp-mods-2.2.19-1.0.28.i686.rpm
MD5 Sum: 41672c1ee25897cbc45fa54826aa9a06
REFERENCES
- ----------
Guardian Digital's public key:
http://ftp.engardelinux.org/pub/engarde/ENGARDE-GPG-KEY
Official Web Site of the Linux Kernel:
http://www.kernel.org/
Security Contact: security@guardiandigital.com
EnGarde Advisories: http://www.engardelinux.org/advisories.html
- --------------------------------------------------------------------------
$Id: ESA-20021022-026-kernel,v 1.3 2002/10/22 11:50:44 rwm Exp $
- --------------------------------------------------------------------------
Author: Ryan W. Maple <ryan@guardiandigital.com>
Copyright 2002, Guardian Digital, Inc.
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