similar to: 2.5.1p1 on Redhat Linux 6.2 using PAM does not log closing of session

Beyond any more general questions of whether pam sessions *should* be run as root, is there an immediate security concern with moving the pam_open_session (and pam_setcred) stuff to the parent (root) process? (E.g., via the patch below.) -- Mike Stone diff -u -r1.4 auth-pam.c --- auth-pam.c 25 Jun 2002 00:45:33 -0000 1.4 +++ auth-pam.c 25 Jun 2002 20:33:41 -0000 @@ -286,6 +286,8 @@

Hello All. Attached is an update to my previous patch to make do_pam_chauthtok and privsep play nicely together. First, a question: does anybody care about these or the password expiration patches? Anyway, the "PRIVSEP(do_pam_hauthtok())" has been moved to just after the pty has been allocated but before it's made the controlling tty. This allows the child running chauthtok to

Hi All. Attached is a patch that implements password expiry with PAM and privsep. It works by passing a descriptor to the tty to the monitor, which sets up a child with that tty as stdin/stdout/stderr, then runs chauthtok(). No setuid helpers. I used some parts of Michael Steffens' patch (bugid #423) to make it work on HP-UX. It's still rough but it works. Tested on Solaris 8 and

http://bugzilla.mindrot.org/show_bug.cgi?id=419 Summary: HP-UX PAM problems with 3.5p1 Product: Portable OpenSSH Version: -current Platform: HPPA OS/Version: HP-UX Status: NEW Severity: normal Priority: P2 Component: sshd AssignedTo: openssh-unix-dev at mindrot.org ReportedBy:

>Okay, this appears to be a problem with pam_unix.so - the code in >pam_sm_open_session is written with the assumption that the tty name is of >the form "/dev/" + something else on the end. I'm not sure why the pam_sm_open_session in pam_unix on Solaris now does this: /* report error if ttyn or rhost are not set */ if ((ttyn == NULL) || (rhost == NULL))

When we installed OpenSSH 2.1.1p4 on our Solaris systems, our users noticed that it did not honor password expiration consistently with other Solaris login services. The patch below is against OpenSSH 2.2.0p1 and adds support for PAM password changes on expiration via pam_chauthtok(). A brief summary of changes: auth-pam.c: * change declaration of pamh to "static pam_handle_t *pamh",

Trying 2.1.1p2 on HP-UX 11 (trusted system) I get: Jul 3 14:24:53 robinson sshd[1236]: debug: Encryption type: 3des Jul 3 14:24:53 robinson sshd[1236]: debug: Received session key; encryption turned on. Jul 3 14:24:53 robinson sshd[1236]: debug: Installing crc compensation attack detector. Jul 3 14:24:53 robinson sshd[1236]: debug: Starting up PAM with username "stevesk" Jul 3

Hello, all- Apparently, under Solaris (I can personally confirm SunOS 5.7 and 5.8), pam_open_session will generate a segfault if PAM_TTY is not set. The obvious symptom of this is that OpenSSH 2.9.9p2 will segfault on any operation that does not request a tty (do_exec_no_pty). Based on a quick google search, this seems to have been encountered by others, though the specific symptoms seem to

On Mon, 22 Nov 1999, Philip Brown wrote: > [ Marc G. Fournier writes ] > > debug("PAM_retval(open_session) about to run"); > > pam_retval = pam_open_session((pam_handle_t *)pamh, 0); > > > > > =========================================== > > > > so, its looking like I'm authenticated properly, but when trying to set up > > the

I'm fairly new to the list and new to submitting patches. Can someone please verify the attached patch for running a HP-UX Trusted System with PAM and OpenSSH 3.4p1? The problem seemed to be that pam couldn't verify the user via __pamh after the call to permanently_set_uid in session.c. So I called do_pam_session prior to the call and added a function do_pam_set_tty in order to set the

As has often been mentioned, Solaris (at least 7 and 8) gives a debug1 message on logout: Cannot delete credentials. This occurs when in auth-pam.c, function do_pam_cleanup_proc(), pam_setcred(__pamh, PAM_DELETE_CRED) is called under UID 0. I suggested a patch for this on Nov 22, 2001, based on openssh 2.9.9p2 through 3.0.1p1. [The attempt in my patch to reset to UID 0 by "if (!flag)

I'm using Dovecot 1.1.7 on CentOS 5.2. I've changed my passdb from passwd to pam, it works fine, but I've found this messages on /var/log/secure: dovecot-auth: PAM adding faulty module: /lib64/security/pam_limits.so dovecot-auth: PAM unable to dlopen(/lib64/security/pam_limits.so) dovecot-auth: PAM [error: /lib64/security/pam_limits.so: failed to map segment from shared object:

The auth-pam.c of sshd server contains a small flaw that allows empty password logins even if "PermitEmptyPasswords" option in the sshd config file is set to "no". The scenario is as follows: Using ssh the user tries to logon to the machine using an account that has empty password. If the user presses enter on the password prompt (NULL password) access is

In do_pam_cleanup_proc(), there are 3 calls to PAM: 1) pam_close_session() - do lastlog stuff 2) pam_setcred(PAM_DELETE_CRED) - delete credentials 3) pam_end() - close PAM It appears that pam_setcred() always fails with the error PAM_PERM_DENIED. This is due to a check done pam_unix.so to not allow a caller with euid 0 to even try to delete their SECURE_RPC credentials. When sshd calls

Hi, I used to have a set of samba shares working fine on a Centos 4 machine, accessed by XP clients and authenticated against a 2003 SBS server. Then I did a yum upgrade and a week later noticed that the seldom-used SMB shares have stopped working. No other changes to the Centos server, and no domain changes. The XP clients now just keep prompting for authentication. A wireshark trap shows

heres a fix for pam support im openssh, inline and attached.. openssh calls do_pam_session early, before a fork(). it does this on the proc still running as root, so it checks the users limits, against what root has running, and depending on limits can fail at the fork() (and almost always does). this patch moves it past the fork. ive been running it for a couple of weeks and everything seems

With OpenSSH 2.9.9p2 as the server, I'm not able to do scp or "ssh machinename command" in general to any of my Suns! I tracked this down a bit; the problem occurs only when PAM support is enabled. However, if I remove line 430 of session.c, "do_pam_session(s->pw->pw_name, NULL);" inside of do_exec_no_pty, the problem goes away. It looks like the following entry

Hello, I pulled the latest from cvs today and ran several tests and added more options to the CFLAGS in the Makefile. To start with, I ran valgrind against sshd & it comes up with this: ==24959== 112 bytes in 1 blocks are definitely lost in loss record 297 of 310 ==24959== at 0x40164650: malloc (vg_clientfuncs.c:100) ==24959== by 0x807A0D1: compat_init_setproctitle (setproctitle.c:236)

Here is a patch that does TIS auth via PAM. It's controlled by a switch in the sshd_config. You'd use it by having a PAM module that sets PAM_PROMPT_ECHO_ON. eg, you could use it with pam_skey or pam_smxs. The patch is against the 2.9.9p2 distribution. I'm not on the list, a reply if this patch is accepted would be great. (But not required, I know some folks have a distaste for

http://bugzilla.mindrot.org/show_bug.cgi?id=83 ------- Additional Comments From djm at mindrot.org 2003-03-10 15:49 ------- Created an attachment (id=247) --> (http://bugzilla.mindrot.org/attachment.cgi?id=247&action=view) Call pam_session after child fork() Hopefully this patch will allow people to gather the feedback necessary to close this bug. ------- You are receiving this