Ubuntu Security :: Screensaver Seems To Respond To Old Password?
Oct 15, 2010
I changed my password in the last few days using passwd. I still haven't gotten used to typing the new one, and entered the old one by accident to unlock the screen saver. I've been able to do this a bunch of times, and I'm quite sure it will still take the old password.This seems to be a serious security issue, and I'm not sure where I should raise this. I hope this is the right forum.I am using Ubuntu 10.04.$ uname -aLinux thunder 2.6.32-25-generic #44-Ubuntu SMP Fri Sep 17 20:26:08 UTC 2010 i686 GNU/Linux$ gnome-screensaver --versiongnome-screensaver 2.30.0
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Apr 10, 2011
I can't get respond through normal channels, all I can use is my phone. My keyboard is disabled. My PC is pretty much a paper weight. Both of them. The only way they could be getting in is through the wifi. I don't know if there is anything I can do. My recovery programsare not accessible. Even onstartup. Is it possible to clear the hard drive another way? I've heard fire purifies, I couldn't get another disc to boot up to reinstall ubuntu. Please text me any ideas, but please be specific with command lines, I have trouble with all the () and / [ and where they go.
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Mar 25, 2011
I upgraded from 9.1 to 10.04 and now if I leave the machine for 5 mins the screen darkens and I am sked for a password. I already use my password to log on on and this nre request is becoming a dammed nuisance. Can someone tell me how to stop it from happening. I can't even go for a leak without having to reenter my password.
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Jun 10, 2010
I don't require any password at boot but to resume after the screen saver I have to log in. The prompt references dabuntu. I have tried the normal settings with no luck.
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Dec 20, 2010
I have an Ubuntu 10.10 box authenticating Users against an LDAP server. User authentication works fine - ssh, console or Gnome.
The only place it has an issue is when the gnome-screensaver is activated and locks the computer. When I try to enter the correct password at this point I get these error in the logs;
Dec 20 14:42:23 box-ubuntu unix_chkpwd[12240]: password check failed for user (myname)
Dec 20 14:42:23 box-ubuntu gnome-screensaver-dialog: pam_unix(gnome-screensaver:auth): authentication failure; logname= uid=10038 euid=10038 tty=:0.0 r
user= rhost= user=myname
Dec 20 14:42:23 box-ubuntu gnome-screensaver-dialog: pam_ldap(gnome-screensaver:auth): Authentication failure; user=myname
[Code]....
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Apr 20, 2011
In order to save power,I want to leave the default(blank) screensaver active,in case I forget to close my monitor when the computer is running.However,the screensaver is,by default,password protected and I would like to disable this annoying feature(which is,anyway,useless for me).If I go to System>Preferences>Screensaver and uncheck "Lock screen when scrensaver is active",will this remove password protection from the screensaver?
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Jul 19, 2009
Slackware64, 13.1, Xfce: Sreensaver is configured to Lock Screen After 5 minutes. This works fine. My problem is that 90% of the time, when I go to wake the screensaver, it won't ask for a password and won't come out of screensaver. The only reliable method I have for getting the password prompt is to switch to a console and then switch back to the X session. Then, the screen saver doesn't display, it just asks for a password.
If I move the mouse when the screensaver is active, the screensaver animation freezes for ~20s and then resumes. If I touch a key (Esc, Shift, space, Enter), the animation freezes for ~30s and then resumes. I never see the Enter Password dialog. Screensaver is configured for Random. I haven't reliably gotten it to work often enough to offer any info as to when it works, but it has worked a couple of times. Keyboard and mouse are configured properly (HAL reports "Logitech Logitech USB Keyboard" for my Logitech Elite keyboard and X uses xkbrules evdev; the mouse is an MX Laser, identified as "Macintosh mouse button emulation").
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Jul 3, 2010
Slackware64, 13.1, Xfce: Sreensaver is configured to Lock Screen After 5 minutes. This works fine. My problem is that 90% of the time, when I go to wake the screensaver, it won't ask for a password and won't come out of screensaver. The only reliable method I have for getting the password prompt is to switch to a console and then switch back to the X session. Then, the screen saver doesn't display, it just asks for a password. If I move the mouse when the screensaver is active, the screensaver animation freezes for ~20s and then resumes. If I touch a key (Esc, Shift, space, Enter), the animation freezes for ~30s and then resumes. I never see the Enter Password dialog. Screensaver is configured for Random. I haven't reliably gotten it to work often enough to offer any info as to when it works, but it has worked a couple of times.
Keyboard and mouse are configured properly (HAL reports "Logitech Logitech USB Keyboard" for my Logitech Elite keyboard and X uses xkbrules evdev; the mouse is an MX Laser, identified as "Macintosh mouse button emulation").
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Jan 4, 2010
presently my laptop requires a password when the screensaver has been activated(equivalent to the lock screen function). However, when I move the mouse to activate the password prompt, the screensaver freezes (all movement stops) and the password prompt is not visible. It's definitely there - if I type my password, then it brings me back to my desktop. However, if I mistype the password, or accidentally hit the mouse button so that somewhere other than the invisible password field is brought to focus, then entering the password becomes impossible, and I have to do a hard restart (ugh). I'm running an HP Pavilion dv5 laptop, with Ubuntu 9.10.
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Jun 4, 2010
I'm using: ubuntu 10.04 64 bit proprietary fglrx drivers for ati 4890.
When shaking the mouse to bring up the computer, the screensaver will freeze and not display the dialog box to log back into my profile. However, even though I can't see it, if I blindly and correctly type in my password it will work.
[update] I posted this question while at work where I do not use Ubuntu...sadly. Anyway, when I got home, I locked the screen, the gl fish screensaver came up. bam, no login dialog box. ok, tried the gl matrix screensaver, bam, no dialog box. Finally, I tried a non-gl screensaver, and what do you know, there's my login dialog box. Something is up with the gl screensavers.
Just to reiterate, when I activate the mouse or keyboard during a gl screensaver I do not see the login dialog box.
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Aug 20, 2010
How do I disable the screensaver password prompt when I've already turned it off in System > Preferences > Screensaver? I tried checking and unchecking the box again and I also tried rebooting.
Another strange phenomenon is that after I enter my password, I'm now disconnected from the wireless network. Any thoughts?
I'm using 10.04 lucid lynx.
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Aug 26, 2010
I noticed that when typing in your password after locking the screen or a screensaver, the program focussed behind it is able to catch the input...
This sounds like a huge security risk to me, is there anyone who can test this? (Only noticed with game in wine, perhaps you need low level xorg access)
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Nov 2, 2010
I'm using VMware and it's very anoonyng to type my pass on the suse window eachime i return to that OS
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Feb 12, 2010
I keep getting messages that I need to update fuse gnome-screensaver and gnutils security updates. However, everytime I try to update either by YAST Online Update or the toolbar icon, it fails to update. The message is that can't remove fuse, gnutls, etc.
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Jun 14, 2011
everytime i try to vnc to my box, it pops up the keyring authentication, which is obviously a huge problem when logging in remotely.how do i change my keyring password to match my login password?
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Oct 22, 2010
I know this has probably been asked too many times here but I need to secure my emails. Personal matters of course. But yeah. I use the program "Password and Encryption Keys" to generate a key to sign my emails with but I do not know what to do. To be blunt, I'm stupid when it comes to this. IF not, steps in creating a key? and giving it (my public key) to the significant other? Finding where both keys are? Implementing it into Thunderbird? If it helps any here's some extra information: Ubuntu distro: Ubuntu 10.04 Email client: Thunderbird
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May 19, 2010
There's an OSS screensaver on windows that I love called PixelCity (links:blog post, github). it's pretty cool. and it runs fine on my Ubuntu (Karmic 9.10) with wine.Is there a way I can tell the gnome-screensaver about it so I can use it as one of my screensavers? I'm still fairly new to Gnome and the whole "screensavers as themes" thing is still confusing me.I've found my themesdir and tried to create a .desktop file for it, but obviously I've gotten something wrong as it just doesn't show when I open the screensaver prefs dialog, no error, no message, it's just not there.
Installing the xscreensaver packages added the extra screensavers I was missing, and I'm a pixelcity away from perfection..Of course the perfect solution would be if someone ported the screensaver natively to linux, which shouldn't be too hard as the source is open, it already runs on openGL and tries to confine most windows stuff to a single file. But I don't know C++ or 3D code or win/linux internals so I wouldn't know where to start..
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Jan 13, 2010
How can I force passwd to use a simple password?I want to change my passwd & delete passwd history (if stored).I plan on creating a Virtual Appliance that uses another password besides my testing password.
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Aug 3, 2010
I already posted a topic similar to this concerning the Desktop OS version, but this deals with the Netbook because unlike the Desktop, the Netbook is less cooperative. Allow me to elaborate: Today (or rather yesterday since it's not after midnight where I am), I changed my password because I was hopelessly confounded about how to get my Wireless Network card up and running after it had been installed and I was allowing my dad to use it. This issue has since been resolved, however...
When I chose my password during the original installation, there was no mention of it being "too simple." This is where the Desktop OS and the Netbook OS differ. The desktop will let me change it in the terminal without any errors. The Netbook will not. When I've attempted to revert it back to the original, it will not let me do so in the User Profile or in the Terminal. The Passwords and Encryption Keys application also does not appear to help.
So now even after I've changed it to a different "complicated" password I am still prompted to insert two different passwords since I changed my user password but I am unable to change the password I input during the installation. A bit screwy methinks. This is extremely important. I'd like to know how to change the original installation password.
If I can't change the main password on my laptop then this is a serious potential security breach just waiting to happen (especially since it's on a laptop and I will be hauling it around with me) and I will most likely install a different OS if this isn't resolved --- It would be very unfortunate since I spent the whole day fixing it and I really enjoy the interface. Luckily I can live with this on my Desktop since I'm not going to be hauling it around with me everywhere when the school year starts.
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Oct 1, 2010
I have a database created by an older program (not Access) that I need to open and retrieve information for my business. The manufacturer put a password on there so that only it's program could open it. I do not use that program, but it has information I need. Is there a way to find that password or circumvent the password altogether?
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Jan 4, 2010
I'm new to ubuntu. Now iam using Karmic Koala. I want to change my password. So i used,
system->Administration->users and groups to change my password . As i entered my new password and clicked on 'Change Password', It is saying, 'password changed'. But when I click the close button in the main users and groups window, it is asking for my password, and I am forced to enter my old password only.
After the window is closed, i logout to check whether my password is changed. But it is not. I have to enter my old password to login.
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Jul 17, 2010
i set my pass on ubuntu 10.4 and it work so good on installing app but suddenly it stopped working i thought i would restart my pc i tried to inter my pass again ubuntu don't accept it although it's surely true
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Aug 27, 2010
I had this great idea to try and change the UBUNTU password. So I took not so drastic effort..I went to System>Administration>Users and Groups. There I clicked on my login name.Clicked on Properties and used the Change Password Button to Change my login password. I did that. [I thought this is the way to change the login password]. After that as usual I tried to launch the Empathy! It started asking me about some Keyring password! I gave my new password and it worked. Now, the weirdness of the issue is that..
1)If I want to login to UBUNTU..I have to give the Old Password [The password which I gave when installing Ubuntu;as if the password change has not come into affect]
oO mount..I have to give old password
To update I have to give old password.
But!
2)To get my things done in Empathy..that is to get the Keyring Challenge done! I have to give the new password and old password does not work here.
I want to stop empathy from asking me about the KEYRING thing. Roll back the system to the previous state; before the password change thing. What exactly went wrong or right? and What is really happening to my system. I mean things are all normal, so far..but why the two passwords? I dont use any heavy things on my machine..just a bit of browsing and Empathy..thats all.and only the default applications are installed on my machine. I use Ubuntu Karmic 9.10.
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Aug 30, 2010
I need to be able to capture a users password when they login. I am well aware of the security issues with this and I'm ok with this.
We run a call center and I am working on migrating from windows to Kubuntu for the callers. It's policy that all callers must report their password to me, so I already know of everyone's password. There has to be some variable/script that I can "hack" to get the password they typed in to the login screen.
What I'm trying to do is that when a user logs in in for the first time, their profile is automatically created and set up. Setting up network drives, email, pidgin (which the password is stored in plain text anyway, so forget about security on that one), web apps, etc.
Trying to find information on How to capture a users password and all have been responded with the usual lecture on why you shouldn't do this. So I've heard it all before and I know of the risks. Like I said, I already have the callers password on file. If I could capture it, I wouldn't have to manually setup each profile every time we get a new caller, which is often since turnover is quite high in call centers.
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Nov 27, 2010
Is it best to do this via the terminal or gui interface? does this meanthat the home folder encryption password is the same as the old login password?
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Dec 21, 2010
Every time I log in, I get the "password for keyring default" question two or three times, unless I enter it immediately as it pops up, sometimes even that doesn't prevent it from respawning. What could be causing this? I'm using Maverick.
P.S. Hmm, I don't think I'll be watching the lunar eclipse much now, the sky is covered with smoke, maybe it's lunar apocalypse.
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Jan 4, 2010
I think it is very easy to hack passwords in Linux, but I did not try it yet. If you use sudo you get 3 attempts for the correct password. But if you get enough time it should be no problem to hack it by bruteforce. Imagine a script an attacker places on your machine which runs for a few hours or days. I think it is much more effective to delete the user out of the admin (or adm?) group so that user cannot be any danger anymore. You would have to login with root and readd the user then.
You now say: but if you login with root you got almost the same effect as with sudo. Of course it is the same. That is why I would use a system (not sure which yet) to create sub enviroments of your OS, which got the attribute that they can run without root, only got one account that can sudo and once sudo access is denied there is no other way to login as root. You just can repermit sudo access by the parent os layer.
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Jan 23, 2010
As the title says, nm-applet rejects my password that I'm positive is correct.Using a custom compiz session,
Code:
#!/bin/bash
compiz &
[code]....
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Jan 30, 2010
I decided to stop using my password to enter Ubuntu (recently installed) and switch to automatic start up. Hit the relevant key, then restart. Received three notices, closed two, entered pass to get encryption code at third, then nothing but a blank, Ubuntu-colour screen. Unable to open Ubuntu. How the heck to I get myself out of this trap?
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Mar 24, 2010
I need a little insight, and I�m not sure if the two can relate, but I am trying to find out the following.
When generating WEP Keys the available bits are: 64/128/152/256; however, you need 5/13/16/29 character respectfully for each key if you generate the key manually.Can this formula be applied to passwords and the length of the password? For example: if my password had 29 characters, could I say that my password is 256-bits?
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