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TUCoPS :: Linux :: Ubuntu :: bu-1201.htm

GRUB 2 vulnerability
GRUB 2 vulnerability
GRUB 2 vulnerability

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==========================================================Ubuntu Security Notice USN-868-1          December 09, 2009
grub2 vulnerability
A security issue affects the following Ubuntu releases:

Ubuntu 9.10

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 9.10:
  grub2                           1.97~beta4-1ubuntu4.1

In general, a standard system upgrade is sufficient to effect the
necessary changes.

Users who have upgraded from GRUB Legacy to GRUB 2 and are still using Grub
Legacy to chainload into GRUB 2, you will have to run the following command
(possibly adjusting 'hd0') to update GRUB 2's on disk core image:

$ sudo grub-install --no-floppy --grub-setup=/bin/true "(hd0)"

If you previously ran 'upgrade-from-grub-legacy', a standard system upgrade
is sufficient to effect the necessary changes.

Details follow:

It was discovered that GRUB 2 did not properly validate passwords. An
attacker with physical access could conduct a brute force attack and bypass
authentication by submitting a 1 character password.

Updated packages for Ubuntu 9.10:

  Source archives: 
      Size/MD5:   250341 94284059eefdd8b1a204142abedb645c 
      Size/MD5:     1945 66af22931f8a965f49a26bc84c5fb9e2 
      Size/MD5:  1244094 78edf78a2cf4ee39d539ba0b82a6afed

  amd64 architecture (Athlon64, Opteron, EM64T Xeon): 
      Size/MD5:  1008342 a3cd4c29207668d03b3f0e6f94805642 
      Size/MD5:   444642 676c9efd4f0dc53510fe200993512fc3 
      Size/MD5:   227576 1c99905094ad542ccb52aaf7da06a287 
      Size/MD5:   297472 329b8b5e30b12106a9c811e082721436 
      Size/MD5:   250536 e739653b2e0028893df0b8a1aaf82c69 
      Size/MD5:     1476 f3e99ae5c03700476811c248cb4a14c9 
      Size/MD5:   345940 13b038768ebe93df1520db2111ccd751 
      Size/MD5:   400562 3e6bad6edb5ca1813aa2fa3d639e810a 
      Size/MD5:   214358 f42279a0623bd57be2bcd7ff7cd55bf5 
      Size/MD5:     1470 2c1a2294f6e47b25c7ba6aae15540b18 
      Size/MD5:   752180 c4e35cf34426692f56054a2b684caee6 
      Size/MD5:     2606 7bf8e3b76a2fb80395200fdb34ce92c3

  i386 architecture (x86 compatible Intel/AMD): 
      Size/MD5:   994122 9ca29e8e186c28bcb6e2ca110ce5c678 
      Size/MD5:   433532 c2cd60a80ad48983a196b071abd54fb7 
      Size/MD5:   227602 5cfd70769ecc58b804d6b8161a617863 
      Size/MD5:   296628 d7c63b6bf1bd1d0ba2c3a0a97adc3cf5 
      Size/MD5:   249016 51f9c46b8e7ad9d69041018b408dfa52 
      Size/MD5:     1478 e58af38d18d4fc457279041b95a7f47b 
      Size/MD5:   327234 23389dcc94cae8666a9468b817c6d55d 
      Size/MD5:   400558 c483aa4407641f759bf6d6e919f4cf4d 
      Size/MD5:   214362 04fea0a758a1f151fc11b5b7263d55fc 
      Size/MD5:     1470 2c0ac267a93d49078a396c0461d85eef 
      Size/MD5:   752154 3b45262773f36cfa0418d3dbd106a371 
      Size/MD5:     2610 d6a3595f00a9f78fd007637f6fca9504

  lpia architecture (Low Power Intel Architecture): 
      Size/MD5:   994762 593e7cbb941e44b3ce873ec4e0e5e10e 
      Size/MD5:   428152 f1d4e8bef9edbfe16e79232de6d5c28b 
      Size/MD5:   249668 c07a97cc2e04ebf1f551652dd5fe89f7 
      Size/MD5:     1476 28da02262428fe931fe85d5ff650cd97 
      Size/MD5:   328712 ddb8770c9770c923f4c9b93d91221f41 
      Size/MD5:   400586 70d2ac9b2f4d3f8b46635df8a4798de1 
      Size/MD5:   214528 5247f468e60f5ac431514fa9c070b2ac 
      Size/MD5:   199482 a710f7be88ee6a8b0a1b3ff134ab43be 
      Size/MD5:   741660 8d4127f5f6651a592f6b91ac9152c60c 
      Size/MD5:     2602 11d90bd876010d9334275515a6908915

  sparc architecture (Sun SPARC/UltraSPARC): 
      Size/MD5:  1002148 66abb79f534f3d55e45c51859c618a06 
      Size/MD5:   332094 bacedc782f461faed75006715ee955e6 
      Size/MD5:   334620 e37a7b515ea456152f714caf796de3c0 
      Size/MD5:     2620 331f84d64fbef94c1b6a97425009db0c

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