[Bug 1808095] Re: uniq is not checking and handling all file types

[Marc Deslauriers]

** Information type changed from Public Security to Public

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Title:
  uniq is not checking and handling all file types

Status in coreutils package in Ubuntu:
  New

Bug description:
  Hi,

  The utility uniq allows all types of files as input. Allowing block
  devices or character devices as input can lead to unwanted behavior
  such as the utility executes indefinitely when device '/dev/urandom'
  is passed as an input. Please refer this for more information
  regarding this issue
  (https://github.com/pkmoore/rrapper/blob/master/anomalies/weird_filetypes.md).

  I've included a patch which checks and handles character devices and
  block devices when passed as input. I've tested the patched version
  and it doesn't seem to break any tests but I'm always glad to further
  work on it. Please get back to me with any feedback or for more
  information.

  Regards,
  Anoop Nadig

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: coreutils 8.28-1ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18
  Uname: Linux 4.15.0-42-generic i686
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: i386
  CurrentDesktop: XFCE
  Date: Tue Dec 11 20:23:32 2018
  ExecutablePath: /usr/bin/uniq
  InstallationDate: Installed on 2018-11-07 (35 days ago)
  InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release i386 (20180426)
  SourcePackage: coreutils
  UpgradeStatus: No upgrade log present (probably fresh install)

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