[Bug 1533605] [NEW] vsftpd local user authentication failure

[J. van der Steen]

Public bug reported:

When logging on using a regular account with a non-encrypted home
directory vsftpd fails with the following lines written to the syslog:

  Jan 13 11:00:31 shusaku vsftpd: pam_ecryptfs: Passphrase file wrapped
  Jan 13 11:00:31 shusaku vsftpd: pam_ecryptfs: Unable to rewrap passphrase file
  Jan 13 11:00:31 shusaku vsftpd: Failed to detect wrapped passphrase version: Permission denied
  Jan 13 11:00:31 shusaku vsftpd: Error attempting to unwrap passphrase from file [/var/ftp/import/.ecryptfs/wrapped-passphrase]; rc = [-13] 

It results in two spawned vsftpd daemons running.

I solved the issue by creating an adapted version of common-auth, named
it common-auth-vsftpd and adjusted it as follows:

  # auth optional pam_ecryptfs.so unwrap

In pam.d/vsftpd I call the new common-auth-vsftpd (instead of common-
auth) as follows:

  @include common-auth-vsftpd

This solved the issue.  But in my opinion vsftpd should not fail in the
first place with the default /etc/pam.d files in place.

** Affects: vsftpd (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1533605

Title:
  vsftpd local user authentication failure

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