[Bug 1048123] Re: Installer try to exec scripts under /tmp

Steve Langasek steve.langasek at canonical.com
Sun Sep 9 07:17:21 UTC 2012

> The /tmp is mounted as nonexec like described in linux security
> guides,

This is not a supported configuration in Ubuntu.  You might want to find
a better security guide.

The exec is being done as part of pre-configuration of debconf.  You can
change this behavior by editing /etc/apt/apt.conf.d/70debconf, but it's
not advisable.

** Changed in: resolvconf (Ubuntu)
       Status: New => Invalid

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  Installer try to exec scripts under  /tmp

Status in “resolvconf” package in Ubuntu:

Bug description:
  Ubuntu 12.04, i386 on thinkpad x41

  Got the new resolvconf package by update today, but the update did not
  install cleanly.

  Vorkonfiguration der Pakete ...
  Can't exec "/tmp/resolvconf.config.31971": Keine Berechtigung at /usr/share/perl/5.14/IPC/Open3.pm line 186.
  open2: exec of /tmp/resolvconf.config.31971 configure 1.63ubuntu15 failed at /usr/share/perl5/Debconf/ConfModule.pm line 59

  The /tmp is mounted as nonexec like described in linux security
  guides, so the way to exec programs there is a bit ugly.

  tmpfs /var/tmp tmpfs noexec,defaults,noatime 0 0

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: resolvconf 1.63ubuntu16
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic-pae 3.2.14
  Uname: Linux 3.2.0-23-generic-pae i686
  ApportVersion: 2.0.1-0ubuntu13
  Architecture: i386
  Date: Sun Sep  9 08:18:58 2012
  EcryptfsInUse: Yes
  PackageArchitecture: all
   PATH=(custom, no user)
  SourcePackage: resolvconf
  UpgradeStatus: No upgrade log present (probably fresh install)

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