Displaying 2 results from an estimated 2 matches for "knasim".
2015 Dec 16
2
Running sshd with Privilege Seperation drops connection on password change
...m what I can see in ptree and auth logs, when the child passwd process returns with SIGCHLD, the parent sshd process terminates.
Sshd logs are as follows as requested at DEBUG3 verbosity. They indicate the ssh, followed by the password change and finally termination of connection:
Dec 16 22:22:13 knasim-ubuntu1 sshd[8569]: debug3: monitor_read: checking request 12
Dec 16 22:22:13 knasim-ubuntu1 sshd[8569]: debug3: PAM: sshpam_passwd_conv called with 1 messages
Dec 16 22:22:13 knasim-ubuntu1 sshd[8569]: debug1: PAM: password authentication accepted for nasim
Dec 16 22:22:13 knasim-ubuntu1 sshd[8569...
2015 Dec 04
3
Running sshd with Privilege Seperation drops connection on password change
...ange.
On changing the password successfully, sshd will drop the connection and client has to reconnect.
ANALYSIS:
Looking at sshd debug logs, it would appear that the child process that runs passwd SIGCHLD's to the parent which appears to be treating that signal as a SIGTERM:
Dec 3 18:36:17 knasim-ubuntu1 passwd[3152]: pam_unix(passwd:chauthtok): password changed for wrs <<<<<<<
Dec 3 18:36:17 knasim-ubuntu1 sshd[3151]: debug1: Received SIGCHLD. <<<<<<<<<<<<<<<<<<
Dec 3 18:36:17 knasim-ubuntu1 sshd[3151]: debug1: sess...