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EnGarde Secure Linux Advisory: kernel

Mar 19, 2003, 01:45 (0 Talkback[s])

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| EnGarde Secure Linux Security Advisory                  March 18, 2003 |
|                          ESA-20030318-009 |
|                                                                        |
| Package: kernel                                                        |
| Summary: several 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, e-commerce, and integrated open source
  security tools.

- --------
  This update fixes several vulnerabilities in the Linux kernel.

  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.

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

  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

  The Common Vulnerabilities and Exposures project ( 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.

- --------
  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:

  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

  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

- ----------------
  These updated packages are for EnGarde Secure Linux Community

  Source Packages:

      MD5 Sum: 5385352091faa056106dc1e92f7af7c1

  Binary Packages:

      MD5 Sum: 9a16886321cc19365ea1a7d27d927b83

      MD5 Sum: 784e3abd25e27db6036bd7638ac22ef6

      MD5 Sum: 42a9c7d7b5879e061d59d1008011dab7

      MD5 Sum: 64b89dcd411abdd455bbb55539a29df6

      MD5 Sum: af21a043fcde3004ad645ca4bb26117e

      MD5 Sum: 8f90859a9313f731c710247e27915a42

      MD5 Sum: 74ff5e04d89e9a5b60d79f3fc0491034

      MD5 Sum: 1fa7cffecc2fd417713f67c4bb19da90

- ----------
  Guardian Digital's public key:

  Official Web Site of the Linux Kernel:

  Security Contact:
  EnGarde Advisories:

- --------------------------------------------------------------------------
$Id: ESA-20030318-009-kernel,v 1.2 2003/03/18 15:35:22 rwm Exp $
- --------------------------------------------------------------------------
Author: Ryan W. Maple <>
Copyright 2003, Guardian Digital, Inc.