Otkrivena je manja greška u radu programskog paketa ifupdown, skupu alata za konfiguraciju mrežnih sučelja. Greška se javlja zbog neispravne komunikacije programskog paketa ifupdown i paketa AppArmor koji brine za računalnu sigurnost. Pod određenim uvjetima moguće je pokretanje DHCP klijenta prije nego se učita njegov AppArmor profil. Napadač može iskoristiti spomenuti nedostatak za zaobilaženje pojedinih sigurnosnih ograničenja. Kako bi se zaštitili, korisnicima se preporuča instalacija objavljene nadogradnje.

===========================================================
Ubuntu Security Notice USN-1037-1          January 06, 2011
ifupdown update
https://launchpad.net/bugs/689892
===========================================================

A security issue affects the following Ubuntu releases:

Ubuntu 10.04 LTS
Ubuntu 10.10

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 10.04 LTS:
  ifupdown                        0.6.8ubuntu29.2

Ubuntu 10.10:
  ifupdown                        0.6.10ubuntu3.1

After a standard system update you need to restart your DHCP network
interfaces to make all the necessary changes.

Details follow:

Under certain circumstances, the DHCP client could start before its
AppArmor profile was loaded and therefore run unconfined. This update
ensures the AppArmor profile is loaded before DHCP client starts.


Updated packages for Ubuntu 10.04 LTS:

  Source archives:

   
http://security.ubuntu.com/ubuntu/pool/main/i/ifupdown/ifupdown_0.6.8ubuntu29.2.dsc
      Size/MD5:     1531 4d254ce468044487883f656b52644456
   
http://security.ubuntu.com/ubuntu/pool/main/i/ifupdown/ifupdown_0.6.8ubuntu29.2.tar.gz
      Size/MD5:   132164 8a6f969a7d860ca7712ae8e0763817aa

  amd64 architecture (Athlon64, Opteron, EM64T Xeon):

   
http://security.ubuntu.com/ubuntu/pool/main/i/ifupdown/ifupdown_0.6.8ubuntu29.2_amd64.deb
      Size/MD5:    62122 d6e022712e01ccc0bb4a879de345e093

  i386 architecture (x86 compatible Intel/AMD):

   
http://security.ubuntu.com/ubuntu/pool/main/i/ifupdown/ifupdown_0.6.8ubuntu29.2_i386.deb
      Size/MD5:    60548 bfd5909fc155b20851a08d5bfdc0a7a0

  armel architecture (ARM Architecture):

   
http://ports.ubuntu.com/pool/main/i/ifupdown/ifupdown_0.6.8ubuntu29.2_armel.deb
      Size/MD5:    59350 641bd5ec2ed37ddee52865bd155606c8

  powerpc architecture (Apple Macintosh G3/G4/G5):

   
http://ports.ubuntu.com/pool/main/i/ifupdown/ifupdown_0.6.8ubuntu29.2_powerpc.deb
      Size/MD5:    61950 ea9660e8a785f0f8228bad93264fb0c4

  sparc architecture (Sun SPARC/UltraSPARC):

   
http://ports.ubuntu.com/pool/main/i/ifupdown/ifupdown_0.6.8ubuntu29.2_sparc.deb
      Size/MD5:    60470 b94ba84b5639fc1c5144e5bb090a281d

Updated packages for Ubuntu 10.10:

  Source archives:

   
http://security.ubuntu.com/ubuntu/pool/main/i/ifupdown/ifupdown_0.6.10ubuntu3.1.dsc
      Size/MD5:     1531 f957c24440e630f7d8f184959677ef06
   
http://security.ubuntu.com/ubuntu/pool/main/i/ifupdown/ifupdown_0.6.10ubuntu3.1.tar.gz
      Size/MD5:   385113 b5a3ed91b7496214aa15aa6338075c40

  amd64 architecture (Athlon64, Opteron, EM64T Xeon):

   
http://security.ubuntu.com/ubuntu/pool/main/i/ifupdown/ifupdown_0.6.10ubuntu3.1_amd64.deb
      Size/MD5:    59196 afe5ed718648c173aa8ada02ae5ece09

  i386 architecture (x86 compatible Intel/AMD):

   
http://security.ubuntu.com/ubuntu/pool/main/i/ifupdown/ifupdown_0.6.10ubuntu3.1_i386.deb
      Size/MD5:    57488 5ed641cfc64cef0be225055ffe9b04fe

  armel architecture (ARM Architecture):

   
http://ports.ubuntu.com/pool/main/i/ifupdown/ifupdown_0.6.10ubuntu3.1_armel.deb
      Size/MD5:    57590 4757b162db12f34e6baf0fd04b4a8553

  powerpc architecture (Apple Macintosh G3/G4/G5):

   
http://ports.ubuntu.com/pool/main/i/ifupdown/ifupdown_0.6.10ubuntu3.1_powerpc.deb
      Size/MD5:    58822 c796d1594e215ccd145f07697e59b0ba





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