Ubuntu Security :: Automatic Sudo Privilege For Lacie 4L?
Nov 16, 2010
Users of Lacie's 4L which is used to burn labels for your Lightscribe disks, are required to have the app run with sudo privileges, (the command being: gksudo 4L-gui). On an older version of an Ubuntu install, I had it set up so that it did this automatically, without it, (or me), being asked for a password. I thought it was something I added to the sudoers file, to give 4l-gui automatic authority, but I forgot how i did it.
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Dec 1, 2010
Currently as a part of an assignment I need to implement a reverse shell on a linux system. The system details are -Quote:Linux Kernal Version - 2.6Database - MySQLUsing web-server I could upload a php file which could execute the command on behalf of me. Now, I want to get root access so that I can get access to system's core files.My sample php file -
PHP Code:
<?php
if((!empty($_GET['cmd']) && isSet($_GET['cmd'])))
[code]....
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Mar 14, 2011
I adjusted some settings in the desktop settings folder in KDE. I had only one user account on the machine. Next time I rebooted I could not log into KDE (it kept bombing out). I had to log into the console. Finally I managed to create a new account with useradd but this user cannot sudo
My problem is that my home directory is encrypted, so I need a new user with sudo privileges to delete all the kde files and folders in my original users home directory so that I can start with a new KDE setup (which won�t be a bad thing since I tinkered a lot).
How can I add sudo privileges to the new account (I presume I can do it by logging in with my sudo account in a terminal login?
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Jul 24, 2011
I have been wondering if a guest user could compromise a machine which is set in the following way: they are not able to open the computer case, to boot from either an USB flash drive or an optical-disc drive, nor have any knowledge of the administrator-user password. Thus, they are landing on their guess account, and have to work their privilege escalation from there.
Therefore, what can they do to gain it? Could they download or otherwise install or run from a thumb drive an application that could be used to crack the administrator-user password? Because, it seems to me, could they enter into the system such a password-cracking application, the whole system could be compromised given the administrator-user password contains less than 9-or-so characters. What do you think? Can I lend my computer to anybody without them having beforehand gained my trust in them? Is the reasoning reasonable?
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Sep 16, 2010
A day ago I finally got around to upgrading the PackageKit installation that had been sitting for a week and a half, so I found a new upgrade for sudo available - the one that gives the sudoreplay command, I forget which version number it is exactly. When I try to use the sudo command I get this notice in my terminal:Code:Can't open /var/db/sudo/me/1: Permission deniedI didn't get it before. What do I have to do to make it open? I'm using SELinux in enforcing mode if that helps.
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Apr 3, 2011
I'm trying to use automatic login with sudo like this:
But in both case I'm getting the same error:
My linux version:
My sudo version:
My terminal settings:
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May 29, 2010
I am new to fedora (been using debian based distro's for the longest time). With the new release I decided to give FC13 (The kde 64 bit spin) a try. I told it to wipe my entire hdd and encrypt the partitions. The partition manager made a few LVM partitions which I assume are encrypted.
The problem I am having is that if I attempt to use an application that would normally need root access to run, I am not prompted to enter my root password. Instead, I am required to logout and log back in as root. Is there a way to make it so that FC13 will prompt me to enter in my root password so I do not need to log in and out? Or is there something Different I should have done during the install process? Also, what is the terminal equivalent of "sudo" in fedora, or is it still sudo/KDEsudo
I also have not used SE Linux before. Do I need to manually enforce the permissions for my applications and generate my own profiles for it, or is that done automatically?
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Jun 26, 2010
I'm installing Hardy Heron on several old Dell's and donating them to less fortunate folks. Is there a way I can set it to automatically log-in at startup, not require the password?
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Mar 10, 2009
F10 logs off a user when idling after a certain time. I cannot find the place where to set the time and other things (like to disconnect from network at logoff etc). where to set this? I didn't find it in neither 'power management' or 'users + groups'.
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May 8, 2010
Is there a way to make Clam update the signatures automatically? I cannot see an option in Clam TK.
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Aug 30, 2010
Is there a way to set Linux to automatically log in to a specific user account and at the same time lock the screen? I want to save time and trigger various software that always should start up on boot, while leaving the computer unattended during startup (extra important and practical for remote control boots), by enforcing a 'screen lock' so that no-one can see what happens behind the login screen without entering the login credentials.
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Mar 3, 2010
A few minutes ago I was using google chrome when suddenly the scroll-lock indicator on my keyboard turned on... I pressed the scroll-lock key, but nothing happened, the light remained. I opened a terminal and ran "top" to find what processes were running when I was automatically logged out. I logged back and checked the logs and found the following entries in my auth.log:
Code:
CRON[2971]: pam_unix(cron:session): session opened for user root by (uid=0)
CRON[2971]: pam_unix(cron:session): session closed for user root
[code]....
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Jun 1, 2010
To comply with standards I need to change the root pw every so often. However, I really don't have a need to know the root password; as the only thing using root, is for ssh authenticating via ssh keys. What I want to do is automate the root password change monthly via a cron job, to a random value. Is there a way to do this without knowing the previous password?
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Feb 8, 2010
Is there still somewhere we can download the Lacie 4L lightscribe labeler? I searched all over their site and have not been able to find it.The lightscribe site had a link to Lacie's downloads and nothing was there.
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Jan 21, 2010
I recently bought a new PC to replace an old failing iMac i was running Linux on the iMac so decided to buy a refurbished PC to install Linux. I'm currently running mint 8 for the record.. I don't know if it's too relevant to my question...
anyway
I was using this Lacie 750gb HD to backup files in Mac OS X, there is a 30gb FAT partition and the rest is HFS+.I recently read that using " hfsplus " from the depositories you can mount HFS+ rw, but ONLY if it is journaled. (how can check this?)
I imagine another option would be to back the disk up and repartition it as FAT and Ext4 or is that possible? what is the best way to do that?
If anyone has time to share any experiences or knowledge on this subject I would appreciate it a lot, I'm having a hard time finding much info about it.I will have to backup the data on this drive first, so I don' t wanna make any hasty choices.
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Aug 20, 2010
Wonder one of you good folks could help me figure out how to download and install (light-scribe and Lacie labeler) easily and correctly in Ubuntu 10.4. I have used and installed it in another Linux (Pclinuxos 2010.07).
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Apr 18, 2010
I have ubuntu 9.10 installed with 2.6.31-21-generic kernel and have recently bought a LaCie d2 network NAS to which I am connecting via a Conceptronic C54BRS4A router, but am having problems with connecting to the share drives.
The d2 software is version 1.0.8 and I have configured a share drive <4music>, and a user <myuser> assigned to a workgroup <workgroup> and with readwrite permissions for that drive.
The version of LaCie Network Assistant (LNA) for Linux available for download here url is just 1.1.0, but the CD accompanying the NAS actually contains LNA for linux version 1.4.1 (5). I have installed both versions and the version 1.1.0 does not even find the drives, let alone mount them, so I am using the 1.4.1 version which does seem to work.
On launching LNA 1.4.1 I am asked for password to mount the drive:
�Enter your password to perform administrative tasks. The application 'mount -t cifs '//192.168.0.102/Public' '/home/myuser/mount -lacie/192.168.0.102/Public' -0 user=myuser, pass=mypassword' lets you modify essential parts of your system
and both the Public and 4music drives are marked in green as Smb (Windows File Sharing) when connecting as registered user <myuser> with password <mypassword>
When I navigate to smb://d2.local/ I can connect fine to Public drive, but the problem comes when I try to connect to Share drive and I get dialogue box saying �Password required for share share on d2.local� and requiring me to input username, domain, password.
The user <myuser> on my linux box is the same as that configured for d2. The domain field autopopulates with the workgroup <workgroup> I have set up for that user on the d2, and I enter the appropriate password <mypassword>, but the connection is not authenticated.
Running
/usr/bin/smbclient -L 192.168.0.102
returns:
Domain=[WORKGROUP] OS=[Unix] Server=[Samba 3.4.1]
Sharename Type Comment
Share Disk
code....
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Apr 9, 2010
I just read an article saying some unflattering things about Ubuntu's use of sudo. My question is this true?[URL]..
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Jun 7, 2010
Certain commands like:
fdisk -l
nmap -sT 192.168.0.1/24
iftop
require administrator privileges to run. A while ago i read a post(forgot where i read it) about being able to let a user run these commands in a script (that contains the desired command) created by the administrator/root without the user having to do a sudo and entering a password. Does anyone know how i can go about doing this?
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Jun 14, 2010
I've enabled root under Ubuntu (i know frowned upon), I'd like to change the default behaviour of sudo so that rather than requesting my password (the password I logon with), it requires the root password.
Have searched the forums but can't find the answer.
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Oct 18, 2010
At the terminal prompt, I can't login using su nor sudo. I can only login as root at the dialog level. How do I correct this?
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Mar 22, 2011
why when I type sudo su in a terminal there's no need to enter my password, I just go straight into root
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Apr 1, 2011
I am using Ubuntu 10.04-alternate-amd64 for full disk encryption. After getting my updates which i get as soon as they are released. I am getting the issue temp root (sudo) password is not being revoked. After using any app that requires the use of sudo the permission for it does not get removed like it normally does.
I have tried logging out then back in, which usually removes the permission, this no longer works, also tried waiting and even after 1 hour permission still there. The only work around I have found is to use the terminal to execute the required programs then after closing terminal the temp permission is now removed like it should be. This issue has effected all of my systems and a friend of mine as well, (friend uses same distro).
To replicate issue:
1) Boot system.
2) Login.
3) Check for updates or any other app that uses root permission.
4) Logout
5) Login
6) Repeat step 3
7) App will not ask for permission it will use root permission automatically.
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May 30, 2011
When I access a remote Natty client using VNC I cannot use the sudo command in a terminal. In fact, the terminal closes itself as soon as I type the sequence sud. Even su d. Or su d.
Sua, su a, su c, su e do not cause the terminal to close itself.
This appears to be some sort of new security "feature".
How do I "work around" it?
[edit]
I'd better elaborate.
I have a remote Natty running 11.04 64-bit desktop version. I have installed tightvncserver on it. I log in on 5901 from a Ubuntu 10.04 64-bit desktop using vinagre. The desktop works fine except when I open a terminal in it and type sud. As soon as I type the d the terminal vanishes. This appears to be a deliberate feature. I also log in to other clients that run 10.04 and this does not happen. I have run Mint 11 in VirtualBox on my local machine and created the same remote desktop and viewed it from mint 11 itself. Same thing happens.
It seems to me that 11.04 has been modified to kill a terminal that is part of a VNC display when sud are typed.
how to remotely administer a 11.04 desktop?
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Aug 17, 2010
When my LaCie BigDisk E+ USB/eSATA FW:1.1548 is plugged into the USB port, I get the following what is below (it fails). This occurs in Ubuntu also. I think it has something to do with the new kernels. I believe ehci_hcd used to be a module. Since it has been compiled into the kernel, the external USB hard disk does not work. I am compiling my own kernel now to see if that is the problem.
dmesg | tail
scsi11 : usb-storage 1-1:1.0
usb 1-1: USB disconnect, address 14
usb 1-1: new high speed USB device using ehci_hcd and address 15
[code]....
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Mar 7, 2010
In a rage of anger against VI I decided to open my firewall config file in gedit, made some changes and was then confronted by the fact that it was read only. I decided to change the permissions for the whole of the /etc folder with:
Code:
sudo chmod 777 /etc/*
This also changed /etc/sudoers so that now whenever I try to use sudo I get the error:
sudo: /etc/sudoers is 0777, should be 0440
segmentation fault
I cannot change it back to 440 because I need sudo to do that.
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Sep 3, 2010
I'm trying to configure my SUDO entries, for this I've added the next lines:User_List ADM = usernameADM ALL=(ALL) NOPASSWD: ALLWhen I close and save the file sends me the following warning>>> /etc/sudoers: syntax error near line 12 <<<visudo: Warning: User_Alias `ADM' referenced but not definedhat now?
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Jul 10, 2011
I've installed Ubuntu via UNetbootin from USB on my child's computer. It comes by default with the sudo command which I find really annoying to work with. I'd rather have my su command.
Now, while googling for a removal instruction, I've read that the sudo command is tied to system functions on some Ubuntu live systems and can't be removed easily. Does anyone know if this applies to the 10.04 live version used by UNetbootin and how to work around this problem?
If not, is it simply enough to remove 'sudo' via the software center? I find many tutorials on how to switch from su to sudo but not much about the other way around.
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Jul 19, 2011
So, I'm not quite sure what the difference is? Is it that sudo allows you to "borrow" superuser privileges, whilst su allows you to actually log in as superuser? Also, when I sudo [command] and get prompted for a password, after I input it, things work just fine, but if I su, and then get prompted for a password, I can't log in as superuser... Why is this?
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Jan 5, 2010
Like many (most?) home users, until now I've had my regular userid in sudoers as "ALL = (ALL) ALL". It occurs to me that, even though my machine has no open ports, this is probably not a good idea - just in case my firewall suddenly burns down. So, if my thinking is right on this, I'm wondering if there is a generally approved list of Cmnd_Alias entries? At this point, I've decided to only add entries as I use them, and to try to honestly appraise my need to do the entry as sudo, vs opening a virtual console as root. My root password is non-trivial.
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