Bug#977107: proftpd-basic: Cannot login after upgrade from jessie to stretch then to buster

[Javier Kohan]

Package: proftpd-basic
Version: 1.3.6-4+deb10u5
Severity: important

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
Running configuration in jessie and before. Upgraded system to stretch (didn't test in stretch) and then to buster. 


Using  Useralias for websites . All was working ok, but after upgrade can not login. 
proftpd[22592] xxxxxxdu.ar (localhost[::1]): USER xxxxxxxxxxxx (Login failed): No such user found
(some data edited for privacy)
UserAlias users map to www-data

Each folder of our web is configured like this:

<Anonymous /var/www/xxxxx>
        AnonRequirePassword     on
        RequireValidShell       off
        AuthAliasOnly           on
        User                    www-data
        UserAlias               xxxxx www-data
        Group                   www-data
        Umask                   003
        GroupOwner              www-data
        MaxClients              2
        AccessGrantMsg          "Acceso Permitido a %u - Toda su actividad esta siendo monitoreada."
        HideNoAccess            on
        UserPassword            www-data w4/CBsf6D7jf2
</Anonymous>

have several folders like that.


More information: we are using smbldap-tools and have users in ldap. However www-data is not in ldap, only in files (as it was from jessie and even before)



*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 10.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-13-amd64 (SMP w/2 CPU cores)
Locale: LANG=es_AR.UTF-8, LC_CTYPE=es_AR.UTF-8 (charmap=UTF-8), LANGUAGE=es_AR:es (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages proftpd-basic depends on:
ii  adduser            3.118
ii  debianutils        4.8.6.1
ii  libacl1            2.2.53-4
ii  libattr1           1:2.4.48-4
ii  libc6              2.28-10
ii  libcap2            1:2.25-2
ii  libhiredis0.14     0.14.0-3
ii  libmemcached11     1.0.18-4.2
ii  libmemcachedutil2  1.0.18-4.2
ii  libncursesw6       6.1+20181013-2+deb10u2
ii  libpam-runtime     1.3.1-5
ii  libpam0g           1.3.1-5
ii  libpcre3           2:8.39-12
ii  libssl1.1          1.1.1d-0+deb10u4
ii  libtinfo6          6.1+20181013-2+deb10u2
ii  libwrap0           7.6.q-28
ii  lsb-base           10.2019051400
ii  netbase            5.6
ii  sed                4.7-1
ii  ucf                3.0038+nmu1
ii  zlib1g             1:1.2.11.dfsg-1

Versions of packages proftpd-basic recommends:
ii  proftpd-doc  1.3.6-4+deb10u5

Versions of packages proftpd-basic suggests:
ii  openbsd-inetd [inet-superserver]  0.20160825-4
ii  openssl                           1.1.1d-0+deb10u4
pn  proftpd-mod-geoip                 <none>
pn  proftpd-mod-ldap                  <none>
pn  proftpd-mod-mysql                 <none>
pn  proftpd-mod-odbc                  <none>
pn  proftpd-mod-pgsql                 <none>
pn  proftpd-mod-snmp                  <none>
pn  proftpd-mod-sqlite                <none>

-- Configuration Files:
/etc/default/proftpd changed:
CONFIG_FILE=/etc/proftpd/proftpd.conf
OPTIONS="-d 10"


-- debconf information:
* shared/proftpd/inetd_or_standalone: standalone