touch-packages team mailing list archive

[Jamie Strandboge <jamie@xxxxxxxxxx>]

** Tags removed: apparmor
** Tags added: aa-policy

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https://bugs.launchpad.net/bugs/1229066

Title:
  evince-thumbnailer can't run mktexpk

Status in “apparmor” package in Ubuntu:
  Triaged

Bug description:
  On Ubuntu 12.04, when running /usr/bin/evince-thumbnailer on a .dvi
  file that references a font for which there is no PK file on the
  system yet, AppArmor blocks the execution of
  /usr/share/texmf/web2c/mktexnam etc. Here are sample audit log
  messages:

  [ 5720.378549] type=1400 audit(1379921624.784:28): apparmor="DENIED" operation="exec" parent=6181 profile="/usr/bin/evince-thumbnailer//sanitized_helper" name="/usr/share/texmf/web2c/mktexnam" pid=6204 comm="mktexpk" requested_mask="x" denied_mask="x" fsuid=1000 ouid=0
  [ 5720.384833] type=1400 audit(1379921624.788:29): apparmor="DENIED" operation="exec" parent=6181 profile="/usr/bin/evince-thumbnailer//sanitized_helper" name="/usr/share/texmf/web2c/mktexupd" pid=6209 comm="mktexpk" requested_mask="x" denied_mask="x" fsuid=1000 ouid=0

  I suspect this is because the sanitized_helper profile in /etc/apparmor.d/abstractions/ubuntu-helpers only covers /bin, /sbin, /usr/bin and /usr/sbin, not /usr/share/texmf/web2c . I'm not sure whether this bug should be filed against apparmor, evince or texlive-binaries; I can think of at least three ways of addressing the issue:
  1) add "/usr/share/texmf/web2c/* Pixr" to the sanitized_helper profile;
  2) modify the profile for /usr/bin/evince-thumbnailer to use something other than sanitized_helper;
  3) provide a separate AppArmor profile for the /usr/bin/mktexpk wrapper (and its siblings).

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