Unable to connect to the Plesk server with SSH using /bin/bash (chroot): connection closed

Symptoms

• A system user is unable to connect to the server via SSH with the chroot environment:

  # ssh [email protected]
  <…>
  Connection to 203.0.113.2 closed.

• In Domains > example.com > Web Hosting Access > System user the Access to the server over SSH is set to /bin/bash (chrooted)

• This error is found in /var/log/messages or /var/log/syslog:

  kernel: [2381259.980854] bash[30893]: segfault at b9002127b4 ip 000000b9002127b4 sp 00007ffdac5cc638 error 14 in libc.so.6[7f2ea39be000+1a1000]

• The following errors are in /var/log/auth.log in some cases:

  systemd: PAM unable to dlopen(pam_unix.so): /lib/security/pam_unix.so: cannot open shared object file: No such file or directory
  systemd: PAM adding faulty module: pam_unix.so 
  systemd: PAM unable to dlopen(pam_plesk.so): /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.25' not found (required by /lib/x86_64-linux-gnu/libcrypt.so.1) 
  systemd: PAM adding faulty module: pam_plesk.so

Cause

Corrupted chroot libraries files.

Resolution

To resolve the issue, rebuild the chroot template using steps from article How to rebuild chroot template?.