similar to: /etc/nologin and Solaris PAM bug

Attached is a patch to be applied with GNU patch -p0, notice that configure needs to be regenerated. The patch addresses the following annoyances: * On AIX there is a signal called SIGDANGER which is sent to all processes when the machine runs low on virtual memory. This patch makes sure that this signal is ignored, because the default on older AIX releases is to kill the running process

Hello everyone, I noticed recently that when I had /etc/nologin in place on my server I couldn't log in when I authenticated via passwords, but when I used RSA authentication I was able to log in no problem. I looked through the source, and I think I might see where the problem is. I have a Linux system, so sshd was compiled with PAM support. Using normal authentication, the pam_nologin

Okay, here is a fixed version of the patch I sent before for fixing the problems I know about with Digital Unix SIA: displaying too much info (MOTD, last login, etc.) when access is denied, and the loss of the error message sometimes when access is denied. It does break some code out of do_login into a couple of separate functions. I did this to avoid duplicating the code in a couple of places.

Hi developers, today I tried to disable logins to an ssh server by putting a nologin file into /etc. This only worked for logins that use the password authentication mechanism. publickey-based authentications still succeeded and the users were allowed into the system. This seems straightforward to me since openssh 4.3 disabled the evaluation of /etc/nologin in favour of pam_nologin but

Hello, appended is a patch that makes it possible to use PAM both for password authentication and TIS (i.e. s/key or opie or any other interactive challenge/response scheme). I have developed this starting from the patch at http://www.debian.org/Bugs/db/61/61906.html on Debian with openssh-2.1.1p4-3. After configuring ssh with --with-pam-tis, there are two PAM services, "sshd" and

The following are patches against openssh 2.1.1p4 to add support for the BSD_AUTH authentication mechanisms. It allows the use of non-challenge/response style mechanisms (which styles are allowed my be limited by appropriate auth-ssh entries in login.conf). The patches also add support for calling setusercontext for the appropriate class when called with a command (so that the PATH, limits,

http://bugzilla.mindrot.org/show_bug.cgi?id=118 Summary: Implement TIS (protocol 1) via PAM Product: Portable OpenSSH Version: -current Platform: All OS/Version: All Status: NEW Severity: normal Priority: P3 Component: sshd AssignedTo: openssh-unix-dev at mindrot.org ReportedBy: fcusack at

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

A while back, I sent in a patch that added Digital Unix SIA authentication to OpenSSH. Well, I just figured out that it didn't handle everything correctly (locked accounts could still log in). I thought I had checked that, but I guess I missed it. Anyway, here is a patch against OpenSSH 2.2.0p1 that fixes this. -- Chris Adams <cmadams at hiwaay.net> Systems and Network Administrator

Hello, I'm trying to implement setting of user limits (ulimit) in sshd. I'm not using PAM so I need it in the sshd itself. The task is very simple - just to put one line calling setup_limits(pw); and link with -lshadow. But the problem is, where to put this line. I did it in session.c, in do_child(), like this: #ifdef HAVE_OSF_SIA session_setup_sia(pw, s->ttyfd == -1 ? NULL

Hi, and here's another bug report against openssh which I could verify using openssh from cvs. So could we please change the behaviour of openssh to be consistent? > when /etc/nologin exists and the pam_nologin.so module is included in > the sshd pam file then users will be denied access when it exists > (though its contents are not displayed to them) however if the user >

I know this has come up before and I even saw a patch from Niklas Edmundsson for 2.1.1p2 (see http://marc.theaimsgroup.com/?l=openssh-unix-dev&m=96316919430887&w=2 ) I had the (mis)fortune recently of realizing that if PAM is defined, /etc/nologin is not honored. session.c tells me that pam_nologin is supposed to take care of this, and that's nice, except that it's a Linux

I was having problems getting the UseLogin option to work on Solaris. I would recieve this error: No utmpx entry. You must exec "login" from the lowest level "shell". This led me to believe that Solaris login wants a utmpx entry in order to function. I put together a patch that calls record_login on Solaris when using the system login. I also noticed that writing a wtmpx

Hello, whereas most people take passwd/shadow/ldap/<whatever> as the place where decision on a chrooted environment / sandbox for certain users is met (just set the given usershell appropriateley), I needed a somewhat different approach. Below is a tiny patch to 2.2.0p1 which enhances the sshd-config by two options and, when set, places all users / users of a certain group immediately in

-- | "Bombay is 250ms from New York in the new world order" - Alan Cox | Damien Miller - http://www.mindrot.org/ | Email: djm at mindrot.org (home) -or- djm at ibs.com.au (work) ---------- Forwarded message ---------- Date: Fri, 9 Jun 2000 17:06:30 +0200 From: Markus Friedl <markus.friedl at informatik.uni-erlangen.de> To: BUGTRAQ at SECURITYFOCUS.COM, misc at openbsd.org,

OpenSSH's UseLogin option allows remote access with root privilege. 1. Systems affected: The default installation of OpenSSH is not vulnerable, since UseLogin defaults to 'no'. However, if UseLogin is enabled, all versions of OpenSSH prior to 2.1.1 are affected. 2. Description: If the UseLogin option is enabled the OpenSSH server (sshd)

It still is not right, but thanks to Steve we have gotten this far.. The issue seems to be here: debug3: entering: type 26 debug3: entering debug1: session_new: init debug1: session_new: session 0 debug3: entering: type 26 : sendmsg(12): Invalid argument debug1: Calling cleanup 0x1200365c0(0x14000d9d8) debug1: session_pty_cleanup: session 0 release /dev/ttyp4 debug1: Calling cleanup

I notice that the nologin parameter for the AUTH command is gone in version 1.1 of Dovecot Authentication Protocol. nologin was added in 1.1, so that authentication client could indicate that there will be no subsequent master requests to retrieve user info. Could we have nologin back please? Kirill

hi, the man page for sshd(1) says about /etc/nologin: "The file should be world-readable". However, nologin has no effect if it's not readable by the connecting user: if (pw->pw_uid) f = fopen(_PATH_NOLOGIN, "r"); if (f) { /* /etc/nologin exists. Print its contents and exit. */ ... ... return(254) if root has a

I am running Dovecot with system users (userdb passwd), but some of those users don't have shell accounts on the IMAP server so their shell on that machine is set to /usr/sbin/nologin. Currently I am using maildirs and this is not a problem, but I am in the process of switching to dbox which means I will need a cronjob running 'doveadm purge -A'. During testing I found that those