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

2003-03-19T00:00:00
ID SECURITYVULNS:DOC:4233
Type securityvulns
Reporter Securityvulns
Modified 2003-03-19T00:00:00

Description

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+------------------------------------------------------------------------+ | EnGarde Secure Linux Security Advisory March 18, 2003 | | http://www.engardelinux.org/ 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.

OVERVIEW


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


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


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


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


Author: Ryan W. Maple <ryan@guardiandigital.com> Copyright 2003, Guardian Digital, Inc.

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