[Bug 1373781] Re: bash incomplete fix for CVE-2014-6271

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: bash (Ubuntu)
       Status: New => Confirmed

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Title:
  bash incomplete fix for CVE-2014-6271

Status in “bash” package in Ubuntu:
  Confirmed

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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