[Bug 1462311] Re: proftpd mod_copy issue (CVE-2015-3306)

[Brian Morton]

Attaching debdiff of upstream patch for trusty package. Precise is also
vulnerable, so I will mark that as well while I work on that next.

My primary test before/after patch:

220 ProFTPD 1.3.5rc3 Server (Debian) [::ffff:10.129.53.2]
USER bmorton
331 Password required for bmorton
PASS *******
230 User bmorton logged in
site cpfr /etc/passwd
350 File or directory exists, ready for destination name
site cpto /tmp/passwd.copy
250 Copy successful

220 ProFTPD 1.3.5rc3 Server (Debian) [::ffff:10.129.53.2]
site cpfr /etc/passwd
Connection closed by foreign host.

** Patch added: "Upstream patch applied for trusty"
   https://bugs.launchpad.net/ubuntu/+source/proftpd-dfsg/+bug/1462311/+attachment/4787121/+files/proftpd-dfsg_1.3.5~rc3-2.1ubuntu2.1.debdiff

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https://bugs.launchpad.net/bugs/1462311

Title:
  proftpd mod_copy issue (CVE-2015-3306)

Status in Proftpd Dfsg:
  Fix Released
Status in proftpd-dfsg package in Ubuntu:
  Confirmed

Bug description:
  The CVE-2015-3306 problem is arround for some time now and is not fixed in 12.04 and 14.04 LTS versions.
  http://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-3306.html

  I also tested it with telnet.
  I can copy files without any authentication if mod_copy is enabled (mod_copy is per default enabled!)
  The module is very usefull. I would be happy if I can re enable it on my servers.

  Debian and other distributions have already fix this in their systems.
  http://bugs.proftpd.org/show_bug.cgi?id=4169
  https://security-tracker.debian.org/tracker/CVE-2015-3306
  https://www.debian.org/security/2015/dsa-3263

  Is there a special reason why this still not fixed on the LTS versions
  of Ubuntu?

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