ulimit operation not permitted in sudo

Solution Verified - Updated -

Issue

With sudo-1.7.4p5-9.el6_2.x86_64, it was possible to issue the following command:

# sudo /bin/su frodo.u -c "bash -c 'ulimit -c unlimited;exit'"

With later versions, sudo-1.7.4p5-11.el6_3.x86_64, sudo-1.7.4p5-12.el6_3.x86_64 and
sudo-1.7.4p5-13.el6_3.x86_64, the same command gives the following:

bash: line 0: ulimit: core file size: cannot modify limit: Operation not permitted

Environment

  • Red Hat Enterprise Linux (RHEL) 6.3
  • sudo-1.7.4p5-9.el6_2.x86_64 [Works]
  • sudo-1.7.4p5-11.el6_3.x86_64, sudo-1.7.4p5-12.el6_3.x86_64, sudo-1.7.4p5-13.el6_3.x86_64 [Fails]

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