Package: ftpd-ssl
Severity: important
Tags: upstream

Dear Maintainer,

While upgradings plugins in a customer wordpress installation, the
following error occured:
  Unpacking the update…
  Could not create directory.
  Installation Failed

Digging down the reason for this error, I came across the following:
Jun 10 11:16:07 <host> ftpd[1766]: command: NLST 
/home/customer/www/wp-content/upgrade/
Jun 10 11:16:07 <host> ftpd[1766]: <--- 550 No files found.
Jun 10 11:16:07 <host> kernel: [ 3202.656980] in.ftpd[1766]: segfault at 0 ip 
00007f0239175644 sp 00007fff1634ca20 error 4 in 
libc-2.19.so[7f023910c000+19f000]

Manually replaying the FTP session reveals, that the FTP server is
unable to retrieve the content of an empty directory using NLST.
But there is no problem with LIST.

As a consequence the next command send by wordpress (MKD) failed,
simply because the daemon died. That's why the misleading error
message in the wordpress output.

Exchanging the ftpd-ssl packet with inetutils-ftpd solved the problem,
while losing the SSL functionality.

-- System Information:
Debian Release: 8.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/1 CPU core)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)


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