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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
(Turbolinux Issues Fix) Linux 2.4 Kernel do_brk() Input Validation Flaw Lets Local Users Grab Root Privileges
SecurityTracker Alert ID:  1008369
SecurityTracker URL:  http://securitytracker.com/id/1008369
CVE Reference:   CAN-2003-0961   (Links to External Site)
Date:  Dec 3 2003
Impact:   Execution of arbitrary code via local system, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.4.22 and prior 2.4 kernels
Description:   An input validation vulnerability was reported in the Linux 2.4 kernel. A local user can gain root level privileges.

It is reported that the do_brk() function does not perform proper bounds checking. A local user can run a userland application to cause the kernel to grant the local user access to the full kernel address space. The userland application can create an arbitrary and large virtual memory area, exceeding user accessible memory limits (TASK_SIZE).

Red Hat reports that an exploit for this flaw has been found in the wild.

Impact:   A local user can gain root privileges.
Solution:   Turbolinux has issued the following fixes:

<Turbolinux 8 Server>

Source Packages
Size : MD5

ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/SRPMS/kernel-2.4.18-15.src.rpm
41892334 9ce72130b877766f844277b6083789af

Binary Packages
Size : MD5

ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-2.4.18-15.i586.rpm
14058497 69241f9f766ae8e3a8b90991c1ebb273
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-BOOT-2.4.18-15.i586.rpm
7100399 5d87135fa0f5279604040fccf229fac1
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-doc-2.4.18-15.i586.rpm
1458110 8cb3a7993e844c54dd537b7fdf00839f
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-headers-2.4.18-15.i586.rpm
1816129 5c1972c228227ce3d7aaa028ead65b71
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-pcmcia-cs-2.4.18-15.i586.rpm
329023 b26f7a1a9df8dd7571930829e5490cdd
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-smp-2.4.18-15.i586.rpm
14549721 3f3eca5764a3e9c5e7968947f95c4258
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-smp64G-2.4.18-15.i586.rpm
14527839 57e25b0b12061b0e67328837a55da0c7
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-source-2.4.18-15.i586.rpm
26510577 9ffa4dbc16fa4fe0f3bbbaaa528872d7

<Turbolinux 8 Workstation>

Source Packages
Size : MD5

ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/SRPMS/kernel-2.4.18-15.src.rpm
41892334 9ce72130b877766f844277b6083789af

Binary Packages
Size : MD5

ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-2.4.18-15.i586.rpm
14058497 69241f9f766ae8e3a8b90991c1ebb273
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-BOOT-2.4.18-15.i586.rpm
7100399 5d87135fa0f5279604040fccf229fac1
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-doc-2.4.18-15.i586.rpm
1458110 8cb3a7993e844c54dd537b7fdf00839f
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-headers-2.4.18-15.i586.rpm
1816129 5c1972c228227ce3d7aaa028ead65b71
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-pcmcia-cs-2.4.18-15.i586.rpm
329023 b26f7a1a9df8dd7571930829e5490cdd
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-smp-2.4.18-15.i586.rpm
14549721 3f3eca5764a3e9c5e7968947f95c4258
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-smp64G-2.4.18-15.i586.rpm
14527839 57e25b0b12061b0e67328837a55da0c7
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-source-2.4.18-15.i586.rpm
26510577 9ffa4dbc16fa4fe0f3bbbaaa528872d7

<Turbolinux 7 Server>

Source Packages
Size : MD5

ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/SRPMS/kernel-2.4.18-15.src.rpm
41892334 9ce72130b877766f844277b6083789af

Binary Packages
Size : MD5

ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-2.4.18-15.i586.rpm
14058497 69241f9f766ae8e3a8b90991c1ebb273
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-BOOT-2.4.18-15.i586.rpm
7100399 5d87135fa0f5279604040fccf229fac1
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-doc-2.4.18-15.i586.rpm
1458110 8cb3a7993e844c54dd537b7fdf00839f
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-headers-2.4.18-15.i586.rpm
1816129 5c1972c228227ce3d7aaa028ead65b71
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-pcmcia-cs-2.4.18-15.i586.rpm
329023 b26f7a1a9df8dd7571930829e5490cdd
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-smp-2.4.18-15.i586.rpm
14549721 3f3eca5764a3e9c5e7968947f95c4258
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-smp64G-2.4.18-15.i586.rpm
14527839 57e25b0b12061b0e67328837a55da0c7
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-source-2.4.18-15.i586.rpm
26510577 9ffa4dbc16fa4fe0f3bbbaaa528872d7

<Turbolinux 7 Workstation>

Source Packages
Size : MD5

ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/SRPMS/kernel-2.4.18-15.src.rpm
41892334 9ce72130b877766f844277b6083789af

Binary Packages
Size : MD5

ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-2.4.18-15.i586.rpm
14058497 69241f9f766ae8e3a8b90991c1ebb273
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-BOOT-2.4.18-15.i586.rpm
7100399 5d87135fa0f5279604040fccf229fac1
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-doc-2.4.18-15.i586.rpm
1458110 8cb3a7993e844c54dd537b7fdf00839f
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-headers-2.4.18-15.i586.rpm
1816129 5c1972c228227ce3d7aaa028ead65b71
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-pcmcia-cs-2.4.18-15.i586.rpm
329023 b26f7a1a9df8dd7571930829e5490cdd
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-smp-2.4.18-15.i586.rpm
14549721 3f3eca5764a3e9c5e7968947f95c4258
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-smp64G-2.4.18-15.i586.rpm
14527839 57e25b0b12061b0e67328837a55da0c7
ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-source-2.4.18-15.i586.rpm
26510577 9ffa4dbc16fa4fe0f3bbbaaa528872d7

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

Message History:   This archive entry is a follow-up to the message listed below.
Dec 1 2003 Linux 2.4 Kernel do_brk() Input Validation Flaw Lets Local Users Grab Root Privileges



 Source Message Contents

Date:  Wed, 3 Dec 2003 21:15:00 +0900
Subject:  [Full-Disclosure] [TURBOLINUX SECURITY INFO] 03/Dec/2003


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

This is an announcement only email list for the x86 architecture.
============================================================
Turbolinux Security Announcement 03/Dec/2003
============================================================

The following page contains the security information of Turbolinux Inc.

 - Turbolinux Security Center
   http://www.turbolinux.com/security/

 (1) kernel -> Integer overflow


===========================================================
* kernel -> Integer overflow
===========================================================

 More information :
    The kernel package contains the Linux kernel (vmlinuz), the core of your Linux operating system.
    The kernel handles the basic functions of the operating system.
    A flaw in bounds checking in the do_brk() function in the Linux.

 Impact :
    The local users may be able to gain root privileges.

 Affected Products :
    - Turbolinux 8 Server
    - Turbolinux 8 Workstation
    - Turbolinux 7 Server
    - Turbolinux 7 Workstation

 Solution :
    Please use turbopkg(zabom) tool to apply the update.
 ---------------------------------------------
 # turbopkg
 or
 # zabom update kernel kernel-BOOT kernel-doc kernel-headers kernel-pcmcia-cs kernel-smp kernel-smp64G kernel-source
 ---------------------------------------------


 <Turbolinux 8 Server>

   Source Packages
   Size : MD5

   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/SRPMS/kernel-2.4.18-15.src.rpm
     41892334 9ce72130b877766f844277b6083789af

   Binary Packages
   Size : MD5

   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-2.4.18-15.i586.rpm
     14058497 69241f9f766ae8e3a8b90991c1ebb273
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-BOOT-2.4.18-15.i586.rpm
      7100399 5d87135fa0f5279604040fccf229fac1
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-doc-2.4.18-15.i586.rpm
      1458110 8cb3a7993e844c54dd537b7fdf00839f
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-headers-2.4.18-15.i586.rpm
      1816129 5c1972c228227ce3d7aaa028ead65b71
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-pcmcia-cs-2.4.18-15.i586.rpm
       329023 b26f7a1a9df8dd7571930829e5490cdd
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-smp-2.4.18-15.i586.rpm
     14549721 3f3eca5764a3e9c5e7968947f95c4258
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-smp64G-2.4.18-15.i586.rpm
     14527839 57e25b0b12061b0e67328837a55da0c7
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/8/updates/RPMS/kernel-source-2.4.18-15.i586.rpm
     26510577 9ffa4dbc16fa4fe0f3bbbaaa528872d7

 <Turbolinux 8 Workstation>

   Source Packages
   Size : MD5

   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/SRPMS/kernel-2.4.18-15.src.rpm
     41892334 9ce72130b877766f844277b6083789af

   Binary Packages
   Size : MD5

   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-2.4.18-15.i586.rpm
     14058497 69241f9f766ae8e3a8b90991c1ebb273
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-BOOT-2.4.18-15.i586.rpm
      7100399 5d87135fa0f5279604040fccf229fac1
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-doc-2.4.18-15.i586.rpm
      1458110 8cb3a7993e844c54dd537b7fdf00839f
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-headers-2.4.18-15.i586.rpm
      1816129 5c1972c228227ce3d7aaa028ead65b71
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-pcmcia-cs-2.4.18-15.i586.rpm
       329023 b26f7a1a9df8dd7571930829e5490cdd
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-smp-2.4.18-15.i586.rpm
     14549721 3f3eca5764a3e9c5e7968947f95c4258
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-smp64G-2.4.18-15.i586.rpm
     14527839 57e25b0b12061b0e67328837a55da0c7
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/8/updates/RPMS/kernel-source-2.4.18-15.i586.rpm
     26510577 9ffa4dbc16fa4fe0f3bbbaaa528872d7

 <Turbolinux 7 Server>

   Source Packages
   Size : MD5

   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/SRPMS/kernel-2.4.18-15.src.rpm
     41892334 9ce72130b877766f844277b6083789af

   Binary Packages
   Size : MD5

   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-2.4.18-15.i586.rpm
     14058497 69241f9f766ae8e3a8b90991c1ebb273
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-BOOT-2.4.18-15.i586.rpm
      7100399 5d87135fa0f5279604040fccf229fac1
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-doc-2.4.18-15.i586.rpm
      1458110 8cb3a7993e844c54dd537b7fdf00839f
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-headers-2.4.18-15.i586.rpm
      1816129 5c1972c228227ce3d7aaa028ead65b71
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-pcmcia-cs-2.4.18-15.i586.rpm
       329023 b26f7a1a9df8dd7571930829e5490cdd
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-smp-2.4.18-15.i586.rpm
     14549721 3f3eca5764a3e9c5e7968947f95c4258
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-smp64G-2.4.18-15.i586.rpm
     14527839 57e25b0b12061b0e67328837a55da0c7
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Server/7/updates/RPMS/kernel-source-2.4.18-15.i586.rpm
     26510577 9ffa4dbc16fa4fe0f3bbbaaa528872d7

 <Turbolinux 7 Workstation>

   Source Packages
   Size : MD5

   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/SRPMS/kernel-2.4.18-15.src.rpm
     41892334 9ce72130b877766f844277b6083789af

   Binary Packages
   Size : MD5

   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-2.4.18-15.i586.rpm
     14058497 69241f9f766ae8e3a8b90991c1ebb273
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-BOOT-2.4.18-15.i586.rpm
      7100399 5d87135fa0f5279604040fccf229fac1
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-doc-2.4.18-15.i586.rpm
      1458110 8cb3a7993e844c54dd537b7fdf00839f
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-headers-2.4.18-15.i586.rpm
      1816129 5c1972c228227ce3d7aaa028ead65b71
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-pcmcia-cs-2.4.18-15.i586.rpm
       329023 b26f7a1a9df8dd7571930829e5490cdd
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-smp-2.4.18-15.i586.rpm
     14549721 3f3eca5764a3e9c5e7968947f95c4258
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-smp64G-2.4.18-15.i586.rpm
     14527839 57e25b0b12061b0e67328837a55da0c7
   ftp://ftp.turbolinux.com/pub/TurboLinux/TurboLinux/ia32/Workstation/7/updates/RPMS/kernel-source-2.4.18-15.i586.rpm
     26510577 9ffa4dbc16fa4fe0f3bbbaaa528872d7


 References :

 CVE
   [CAN-2003-0462]
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0462
   [CAN-2003-0465]
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0465
   [CAN-2002-0499]
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0499
   [CAN-2003-0501]
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0501
   [CAN-2003-0961]
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0961


 * You may need to update the turbopkg tool before applying the update.
Please refer to the following URL for detailed information.

  http://www.turbolinux.com/download/zabom.html
  http://www.turbolinux.com/download/zabomupdate.html

Package Update Path
http://www.turbolinux.com/update

============================================================
 * To obtain the public key

Here is the public key

 http://www.turbolinux.com/security/

 * To unsubscribe from the list

If you ever want to remove yourself from this mailing list,
  you can send a message to <server-users-e-ctl@turbolinux.co.jp> with
the word `unsubscribe' in the body (don't include the quotes).

unsubscribe

 * To change your email address

If you ever want to chage email address in this mailing list,
  you can send a message to <server-users-e-ctl@turbolinux.co.jp> with
the following command in the message body:

  chaddr 'old address' 'new address'

If you have any questions or problems, please contact
<supp_info@turbolinux.co.jp>

Thank you!

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html

 
 


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