touch-packages team mailing list archive

[Fumihito YOSHIDA <hito@xxxxxxxxxxx>]

Hi,

Red Hat released new packages at
https://rhn.redhat.com/errata/RHSA-2014-1306.html, that include fix for
CVE-2014-7169, and they fixed with another way, and another problems
(OOB memory access).

We can investigate from RH SRPM,
http://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/bash-4.1.2-15.el6_5.2.src.rpm

IMHO, Red Hat fix included 3 patches.
 - bash-4.2-cve-2014-7169-0.patch : parser bug fix-A for CVE-2014-7169 (same as http://seclists.org/oss-sec/2014/q3/685 )
 - bash-4.2-cve-2014-7169-1.patch : introduce variable isolation in  function import situation. another fix for CVE-2014-7169. this is new patch.
 - bash-4.2-cve-2014-7169-2.patch : OOB memory access(new problem) fix. 

They probosed these new patches at http://www.openwall.com/lists/oss-
security/2014/09/25/32 .

I make a proposition about that, could we apply these new patches? or
they are not important?

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to bash in Ubuntu.
https://bugs.launchpad.net/bugs/1373781

Title:
  bash incomplete fix for CVE-2014-6271

Status in “bash” package in Ubuntu:
  In Progress
Status in “bash” source package in Lucid:
  Fix Released
Status in “bash” source package in Precise:
  Fix Released
Status in “bash” source package in Trusty:
  In Progress
Status in “bash” source package in Utopic:
  In Progress

Bug description:
  The fixes for CVE-2014-6271 do NOT work! Security vuln, but should be
  public, this is known already.

  Ubuntu 14.04 LTS: bash 4.3-7ubuntu1.1
  Ubuntu 12.04 LTS: bash 4.2-2ubuntu2.2
  Ubuntu 10.04 LTS: bash 4.1-2ubuntu3.1

  Testcase:
  rm -f echo && env -i  X='() { (a)=>\' bash -c 'echo id'; cat echo

  expected output:
  bash: X: line 1: syntax error near unexpected token `='
  bash: X: line 1: `'
  bash: error importing function definition for `X'
  id

  actual output:
  bash: X: line 1: syntax error near unexpected token `='
  bash: X: line 1: `'
  bash: error importing function definition for `X'
  uid=0(root) gid=0(root) groups=0(root)

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