[ESA-20030318-009] Several 'kernel' vulnerabilities

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| EnGarde Secure Linux Security Advisory March 18, 2003 |
| http://www.engardelinux.org/ ESA-20030318-009 |
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| Package: kernel |
| Summary: several vulnerabilities. |
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EnGarde Secure Linux is a secure distribution of Linux that features
improved access control, host and network intrusion detection, Web
based secure remote management, e-commerce, and integrated open source
security tools.

OVERVIEW

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This update fixes several vulnerabilities in the Linux kernel.

CAN-2002-1380

Local users could cause a denial of service by using the mmap()
function with the PROT_READ parameter to access memory pages via the
/proc/pid/mem interface.

CAN-2003-0001

Most of the Ethernet card (NIC) device drivers did not pad frames with
null bytes, leading to the potential leakage of kernel memory.

CAN-2003-0127

There is a vulnerability in the kernel module loader which could
allow a local attacker to obtain root privileges by using ptrace to
attach to a child process spawned by the kernel when a new module is
loaded.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the names CAN-2002-1380, CAN-2003-0001, and CAN-2003-0127 to
these issues.

All users are recommended to upgrade immediately using the special
SOLUTION in this advisory.

SOLUTION

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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 kernel1 kernel2 ...

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

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These updated packages are for EnGarde Secure Linux Community
Edition.

Source Packages:

SRPMS/kernel-2.2.19-1.0.30.src.rpm
  MD5 Sum: 5385352091faa056106dc1e92f7af7c1

Binary Packages:

i386/kernel-2.2.19-1.0.30.i386.rpm
  MD5 Sum: 9a16886321cc19365ea1a7d27d927b83

i386/kernel-lids-mods-2.2.19-1.0.30.i386.rpm
  MD5 Sum: 784e3abd25e27db6036bd7638ac22ef6

i386/kernel-smp-lids-mods-2.2.19-1.0.30.i386.rpm
  MD5 Sum: 42a9c7d7b5879e061d59d1008011dab7

i386/kernel-smp-mods-2.2.19-1.0.30.i386.rpm
  MD5 Sum: 64b89dcd411abdd455bbb55539a29df6

i686/kernel-2.2.19-1.0.30.i686.rpm
  MD5 Sum: af21a043fcde3004ad645ca4bb26117e

i686/kernel-lids-mods-2.2.19-1.0.30.i686.rpm
  MD5 Sum: 8f90859a9313f731c710247e27915a42

i686/kernel-smp-lids-mods-2.2.19-1.0.30.i686.rpm
  MD5 Sum: 74ff5e04d89e9a5b60d79f3fc0491034

i686/kernel-smp-mods-2.2.19-1.0.30.i686.rpm
  MD5 Sum: 1fa7cffecc2fd417713f67c4bb19da90

REFERENCES

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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: [email protected]
EnGarde Advisories: http://www.engardelinux.org/advisories.html

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$Id: ESA-20030318-009-kernel,v 1.2 2003/03/18 15:35:22 rwm Exp $

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Author: Ryan W. Maple <[email protected]>
Copyright 2003, Guardian Digital, Inc.

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