Thanks Markus #1 trying with this now:
account optional pam_exec.so debug quiet /root/foo.sh And $ cat /root/foo.sh #!/bin/bash /bin/true touch /tmp/brooks-was-here /bin/true By default vsftp is configured for the snakeoil certificate to get started easily, but with ssl disabled. So enable it and restart. $ sed -i -s -e 's/ssl_enable=NO/ssl_enable=YES/' /etc/vsftpd.conf $ sudo systemctl restart vsftpd.service # Using it with ftps (and ignore cert verification as it is the snakeoil cert) root@o:~# lftp 127.0.0.1 lftp 127.0.0.1:~> set ftp:ssl-force true lftp 127.0.0.1:~> set ssl:verify-certificate false lftp 127.0.0.1:~> login ubuntu ubuntu lftp ubuntu@127.0.0.1:~> dir -rw-r--r-- 1 0 0 7 Jul 12 06:59 egal lftp ubuntu@127.0.0.1:~> get egal 7 bytes transferred lftp ubuntu@127.0.0.1:~> exit root@o:~# cat egal foobar root@o:~# ll /tmp/brooks-was-here -rw------- 1 root root 0 Jul 15 12:04 /tmp/brooks-was-here root@o:~# date Mon Jul 15 12:04:32 UTC 2024 I checked ftps was enabled e.g. a dir without it was not working: 530 Non-anonymous sessions must use encryption. Sadly that means it still works fine. We still need more from you about what is needed to trigger this hang :-/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2069324 Title: vsftpd hangs with SIGCHLD when pam_exec.so is used To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vsftpd/+bug/2069324/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
