Fedora :: Cannot Login After Security Update
Sep 13, 2009
Yesterday, I updated my system with the latest security update and other software updates. Following the update, I am not able to log into the system after restart.As usual, I was prompted with the login page which looks as per normal. I chose my login id and entered my password. It brings me briefly to my desktop showing only my wallpaper (without any upper and bottom taskbars/panels). Then the screen went blank and the login page appeared again.I entered the login id and password, was shown the desktop wallpaper, screen went blank and the login page appeared. This continues over and over and over. After multiple tries and with some luck, I am able to log in as per normal.What seems to be the problem?
1. How do I check the system for errors?
2. How do I check which update has been updated?
3. Is there any way for me to restore to its original state (I migrated from FC10 to FC11 via yum update)?
The only other change apart from the security update is that I installed wine - which has been uninstalled the moment I was able to re-logged in.I attach the details of my grub.conf file below which I hope could be of some useful info.
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Mar 3, 2011
i updated both browsers i have and lost my secure log-in pages (no padlocks showing ) concerning different Web mail accounts.Just before i did these updates i checked an unrelated thing on-line regarding my sound card of which i kept a copy of and got this message below :
!!ALSA/HDA dmesg
!!------------------
[ 12.762633] cfg80211: Calling CRDA for country: AM
[code]....
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Jan 5, 2010
I was reading that Arch does not provide security updates, but just provides security by keeping with up-to-date software...So what is in a security update and what does it patch? The kernel?
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Aug 18, 2010
I have had two instances recently where I was unable to log in to my computer with uid 500, but I could log in as root. In the first case, I could log in as user 500 to virtual terminals (ctrl-alt-F2, etc) but I could not log in to X. I found that, in the file /etc/pam.d/password-auth-acthere was an extra line that read"accountrequiredpam.access.so"I did not put that line there. When I removed the line, I could log in fine.In the other case, I could log in as user 500 to X, but could not log in to virtual terminals as user 500 (but could as root). I found that, in the file/etc/pam.d/system-auth-acThere was the same extra line as above. And again, I did not put it there, but when I removed it the problem was solved and I could log in to virtual terminals as user 500.I would like to find out, step by step, what happens when I enter my username and password in either a virtual terminal or in X. The login info must be passed to something that checks some files and then lets me in or not. How does that work?
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Sep 10, 2009
This morning I had the notification that there were 21 updates available, and I selected to install them. The system then notified me that a restart was required and I clicked the restart button. After restarting, the system boots to the GUI screen and I select my name and enter the password. It then plays the login sound, the cursor "swirls" and it cycles back to the login screen. Switching over to another terminal screen I can login from the command line.
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Oct 20, 2009
I did a 'yum update' in fc11 and later I am not able to login. When I click on my user name, it says 'unable to authenticate user' without even entering any password. stuck with this problem for quite some time. I am a newbie to linux.
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Nov 10, 2009
It's two days now I'm in deep troubles after my last "yum update". The system boots as usual, the graphical login pops up the normal way but no input is handled by either the internal keyboard (the system is a laptop), the mouse pad, the external USB mouse and keyboard.
The hardware itself seems to be working as I can pop up the BIOS menus and even edit the GRUB booting line. But, after GRUB there's no possible input. I've tried to boot the system with the Fedora 11 DVD, rescue menu and then chroot. This in order to run a "yum update" in the hope that the problem was in some broken update. No chance: there's no update.
My questions are:
1. Is there a way to boot Fedora withou any graphical interface from GRUB (or anything else to skip the KDE)?
2. Is there a way to have the (cabled) network activated at boot *before* the graphical login?
3. What the he** is happening to my otherwise pefectly working laptop?
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Apr 28, 2009
I know this is probably easy and if I only took a while to figure it out maybe I could but I have some stuff that needs to happen soon and I can't figure this out. I was wondering how I could have a log monitor that would email me whenever someone tries to login over ssh to my system. I'm open to everything daemons/scripts or cron itl works as I am not running a production server (but I might be starting that soon). Oh and just a side how do I get sent an email when I get port scanned
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May 8, 2009
I just installed Fedora 10 on my laptop 2 days ago. I dont seem to remember the password i userd for my username. Is there a way to reset or change the password? I cannot login to the system.
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Jul 20, 2009
I'm migrating my file server from Fedora 9 to Fedora 11 (clean install), and I'm having a horrendous time trying to get key based SSH logins working. I've set it up before, and I can't figure out why it won't work now. I copied my public key into ~/.ssh/authorized_keys2 and set the folder permissions for 700 and the file permissions for 600. Then I restarted sshd. Now unless I remember wrong I thought that's all you have to do. It didn't work. So I rebooted just for good measure. Still didn't work. So I made sure that my client was still sane. I can log into my OpenBSD machine just fine. I compared the sshd_config from OpenBSD to the Fedora one, and the options seem pretty close.
At that point I had nothing to lose and just started messing with the Fedora sshd_config. I also noticed in the config that the commented AuthorizedKeys file had dropped the 2 off the end, so I tried changing that as well. Still nothing. Password based logins work, but I really don't want to go that route. Now I can only think of two possibilities. One, some sshd_config setting is wrong and I don't know what it is. Two, there's some package that's required for key based logins that I accidentally unchecked during the install process. That's about all I can come up with. Here's my sshd_config, I tried to just set everything back to default.
Code:
#Port 22
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::
# Disable legacy (protocol version 1) support in the server for new
# installations. In future the default will change to require explicit
# activation of protocol 1
Protocol 2 .....
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Sep 8, 2009
I have a problem, I have installed Fedora 11. And i need to login as root user.
How to do so?
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Nov 15, 2009
I have a server box behind my ISP router at home, and I need to allow ssh access to my server. My ISP router doesn't let me allow selectively ssh from some IP. It allows ssh to everyone.
I have fedora10 and openssh-server-5.1p1-3. How can I configure openssh to allow just from 1 IP?
Does it use xinetd at all and the hosts.allow and .deny mechanism?
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Nov 29, 2009
got this message during my login to my ISP webpage broadband , this first time i got thisQuote:
You have asked Firefox to connect
securely to ******, but we can't confirm that your connection is secure.
Normally, when you try to connect securely,
[code]....
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Dec 8, 2009
I'm trying to secure a workstation according to the DISA STIG and updated this machine from f10 to f12 to take care of a lot of kernel and openssl vulnerabilities.
I've gone into the Login Manager by running /usr/bin/kcmshell4 kdm --lang en_US as root, turned off themed greeter to enable the Dialog tab and inserted the login banner in the Greeting field. I checked the Xresources file in both /etc/kde/kdm and /etc/X11/xdm and the xlogin*greeting: field has my banner.
However when I restart the machine I am not prompted by the banner and when I select a user I am not prompted by the banner.
I'm not sure if this could be the issue but I get errors when launching kcmshell4:
Quote:
I have to sudo -s from the user with uid 1003 to root. does this need to be run from real root?
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Jul 26, 2010
I need to create a number of internal Linux users for admin purposes. I do not want these users to appear on the initial console login page just after Fedora boots up, as users who can attempt to log in, and I do not want to allow these users to log in directly. I merely want these users to be accessed via su, just like the root user.
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May 3, 2011
After entering the gdm I'm being asked "Would you like to enter a Security Context [N]?" during login. I've had a look around online but can find nothing final about this.
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Aug 9, 2010
I am unable to login following an update, Fedora 13. The screen splashes after crond is loaded. The GUI does not come-up. In text mode i can't login as root or other user accounts except in kernel 1. I can access some files via FTP command. Is the password file corrupt ?
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Apr 4, 2009
Remote root login is enabled. How do I disable this
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Jul 29, 2009
Is there any way to hide my username in login screen (GDM)? I ask this because in Ubuntu I have seen that you need manually enter your username.
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Sep 25, 2009
I am a new Linux user and have a question about the administrative authentication. When I am logged in as a user and I need to do something that requires root privileges the little password window comes up and I enter the root password. My question is how long are the root privileges granted for?I noticed that a few minutes after finishing checking out the firewall configuration tool and closing the window that I was still able to re-enter the fire wall tool and other administrative tools. How do I log out of the root privileges without logging out and then back into my account?
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Jan 27, 2010
Can't seem to do it, wondering if anyone knows how? Normally there's something in sshd_config that can be switched to true or yes to allow root login but I can't see it in fedora 12.I can login via root at a terminal no problem, just not via ssh, I get access denied every time. Also, I need to login using password authentication.I've done: 227169 but that's just for GUI which I don't really need since I rarely ever log into the GUI.I have also searched through here and mostly only found info such as above, how to enable root login for GUI, or billions of posts about how logingin as root is bad but I cannotswer to my question.DISCLAIMER: Please do not reply to this thread if all you can contribute is the question of why I need root or to put some message telling me I can do everything using su, etc, etc. Please only contribute if you can answer my question. A: My machine and a valid quesiton. B: Spirit of Linux is open, not restrictive
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Sep 20, 2010
Recently I upgraded my kernel to 2.6.34.6-47.fc13.x86_64 and then also did an update to 2.6.34.6-47.fc13.x86_64. Both of these kernels I do not get a login dialogue box. I still have the one kernel that works and it is 2.6.33.8-149.fc13.x86_64. The system I am on has a Radeon graphics card, but I don't think the graphics card is the issue since I get the login screen's background, but not the login screen itself. <Later> After messing around with this for a while I came to the conclusion that livna-config-display was messing with the xorg.conf file. Removed it and things seem to be working fine now.
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Dec 14, 2010
I'm not able to login after system update tonight. whenever I try to login, the screen goes black briefly and it automatically logs off.
I tried both kernel, 2.6.35.6-64.fc14.x86-64 and 2.6.35.6-45.fc14.x86-64, but failed.
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Feb 12, 2011
after update i can not longer see the splash login gui screen but i can only see the log in terminal... works ok but how can I enable the gui login
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May 9, 2011
I have a problem with my Fedora 14, only on Fedora 15. Been out of my home for a week, when I arrived home and turned the PC on first thing I made was the update, as usual. But when I reboot or shutdown the PC and when I go to do login, the Fedora get's stuck and doesn't show me the login window to insert my login. Made a clean install and it worked fine, until I made the last updates and it became again, stuck before the login window appears. Is there any update making this? What could be? It must be some update, because when I made the clean install it worked fine, and with the first update also worked fine.
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Feb 3, 2010
I just installed FC12 and was trying to do the security update, but it encountered an "internal error" and asked me to "report this bug to the distribution's bugtracker" with the details. However, I am not sure exactly what to do. Could someone be kind enough to let me know?
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Feb 2, 2010
For a month or so now, I have been enabling ssh and opening port 22. I cron'ed the start and stop commands to leave them open only a few hours a day. After a bit, I checked my logs to find that some IP or another was attempting to brute force my root account.
I took little real threat by the offense.
(1) my system does not allow root to login and
(2) it would cut them off sooner than later when my system issued the stop command.
fast forward
Today I log in to find that all of my log files, as viewed from the gnome log file viewer, were empty of entries from about noon yesterday and prior.
Though I haven't noticed anything at all out of the ordinary with my system, I would like to get more opinions on the matter. Would there be any conceivable way that this was an automatic system routine, a clean up action of something? Additionally, if I was indeed the victim of a hack, what can I do to further protect my system (keeping in mind that I do want to access my system via ssh from time to time)?
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Aug 27, 2011
I was trying to update software and it told me to log out and login again. When I tried to login it told that there is a problem and I need to log out and to login again and it kept repeating the message and fedora is not working at all and before that it wasn't working right it kept suspending without reason and each time I turn the laptop off from the power button.
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Mar 25, 2009
Today (25 of March) Fedora 10 asked to install latest security updates. I allowed it to install them and everything seemed ok. But after the next boot I understood that some applications won't launch. Skype, last.fm player, VirtualBox - all the qt ones. I've reinstalled those apps, and reinstalled qt. They still don't launch.When I execute one of them from terminal - it just waits and nothing happens.The process really starts, I can see it from ps -A and gnome's System Monitor.Here's the /var/log/yum.log for March 25th:
Mar 25 00:20:37 Updated: libX11-1.1.5-1.fc10.i386
Mar 25 00:20:39 Updated: lcms-libs-1.18-1.fc10.i386
Mar 25 00:20:44 Updated: gtk2-2.14.7-7.fc10.i386
[code]....
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Nov 30, 2009
There are lots of updates in it. This is just a newly install fedora 12. I don't know which is necessary to update in SE.
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