Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Zero-Day GRUB2 Vulnerability Hits Linux Users, Patch Available for Ubuntu, RHEL
softpedia® ^ | 16 Dec 2015, 01:23 GMT | Marius Nestor

Posted on 12/16/2015 7:26:22 PM PST by Utilizer

GRUB password protection can be bypassed

According to Canonical'a latest Ubuntu Security Notice, it would appear that there's a zero-day security vulnerability in the GRUB2 (GNU GRand Unified Bootloader) packages, affecting all GNU/Linux distributions running 2.02 Beta.

The security flaw was discovered by developers Ismael Ripoll and Hector Marco in the upstream GRUB2 packages, which did not correctly handled the backspace key when the bootloader was configured to use password-protected authentication, thus allowing a local attacker to bypass GRUB's password protection.

(Excerpt) Read more at news.softpedia.com ...


TOPICS: Computers/Internet
KEYWORDS: 0day; grub2; linux; security
Navigation: use the links below to view more comments.
first 1-2021-31 next last
Being patched even as it's being posted!
1 posted on 12/16/2015 7:26:23 PM PST by Utilizer
[ Post Reply | Private Reply | View Replies]

To: Utilizer

Who flubbed the GRUB?


2 posted on 12/16/2015 7:29:13 PM PST by smokingfrog ( sleep with one eye open (<o> ---)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Utilizer

Until it’s patched I guess I will just have to trust my chihuahuas.

I dog toys and dog treats start arriving from Amazon, I will know I’ve been hacked. ;-)


3 posted on 12/16/2015 7:29:26 PM PST by r_barton
[ Post Reply | Private Reply | To 1 | View Replies]

To: unixfox; ShadowAce

Ping!


4 posted on 12/16/2015 7:32:51 PM PST by Utilizer (Bacon A'kbar! - In world today are only peaceful people, and the muzlims trying to kill them)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Utilizer
And despite the hyperventilating, linux is hardly a blip on the radar of constant malware attacks. I started using slackware almost twenty years ago (where did the time go?), and never looked back, I get a guilty private chuckle when window people lament over which anti-virus or malware app is the new rage. Windows is a virus people, deal with it.
5 posted on 12/16/2015 7:58:00 PM PST by SpaceBar
[ Post Reply | Private Reply | To 1 | View Replies]

To: SpaceBar
Windows is a virus people, deal with it.

Software is easy to deal with. People suck.

6 posted on 12/16/2015 7:59:33 PM PST by tacticalogic ("Oh bother!" said Pooh, as he chambered his last round.)
[ Post Reply | Private Reply | To 5 | View Replies]

To: tacticalogic

I realize that there are people who rely on windows only software. Turbo tax comes to mind since a friend uses it religiously. But if you have a business computer you use to do people’s taxes, don’t use it for casual web-browsing. You’re only asking for trouble.


7 posted on 12/16/2015 8:04:02 PM PST by SpaceBar
[ Post Reply | Private Reply | To 6 | View Replies]

To: SpaceBar
But if you have a business computer you use to do people’s taxes, don’t use it for casual web-browsing. You’re only asking for trouble.

But if I have Linux I can just click on any damned thing I want and nothing bad will ever happen?

8 posted on 12/16/2015 8:08:01 PM PST by tacticalogic ("Oh bother!" said Pooh, as he chambered his last round.)
[ Post Reply | Private Reply | To 7 | View Replies]

To: r_barton

Some of the major distros are already patched. :)


9 posted on 12/16/2015 8:22:47 PM PST by Utilizer (Bacon A'kbar! - In world today are only peaceful people, and the muzlims trying to kill them)
[ Post Reply | Private Reply | To 3 | View Replies]

To: SpaceBar

I started in the mid-nineties and I’ve been loving it more and more every year. One of the best features is that whenever (rarely) a security flaw is discovered, the coding community immediately begins working tirelessly to fix the problem and issue a patch as quickly as possible.

THE most secure OS out there, by far.


10 posted on 12/16/2015 8:27:51 PM PST by Utilizer (Bacon A'kbar! - In world today are only peaceful people, and the muzlims trying to kill them)
[ Post Reply | Private Reply | To 5 | View Replies]

To: SpaceBar

I’ve seen a lot of infected Windows systems. The internet is rife with malware, and a lot of it is being spread by hacked Linux servers. I’m starting to suspect a lot of that happens because the admins got sloppy, and the “It can’t happen to me because I’m running Linux.” attitude has a lot to do with it.


11 posted on 12/16/2015 8:30:04 PM PST by tacticalogic ("Oh bother!" said Pooh, as he chambered his last round.)
[ Post Reply | Private Reply | To 5 | View Replies]

To: Utilizer

Here’s a drunken rant. I haven’t been able to get any of my machines to share any files whatever. That includes Mint 17.2, 17.3, Ubuntu 14.04, 15.04, 15.10, Lubuntu 14.04, 15.04, Windows 10. Give me the miraculous link that will point me the way or I guess I’m retarded. I would murder samba if I could.


12 posted on 12/16/2015 8:31:20 PM PST by Stentor (RIP -- Nicholas Thalasinos.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Stentor

Here’s a direct and nonstandard way, not filled with endless command-line entries:

Download and install a version of Mepis Linux. Put it on all your machines - even dual-boot if you like (I have several machines I do this with).

After you login, right-click on any partition you wish to share and select “properties” “file-sharing”. A small window will pop up asking if you want to run the “filesharing” program. Click yes and select your partition. It will now appear on all computers connected to your local network. Copy and share all you wish. :)

See? No command-lines to memorize and laboriously type out. Right-click and share, right-click again and un-share. Simple.


13 posted on 12/16/2015 8:42:28 PM PST by Utilizer (Bacon A'kbar! - In world today are only peaceful people, and the muzlims trying to kill them)
[ Post Reply | Private Reply | To 12 | View Replies]

To: Stentor

Oh, and don’t forget to select the Windows Share (Samba) option when you enable filesharing.

Later, as time goes by, you can work on figuring out how to get filesharing working on other OSs’ and what it will take to get them functional. Right now this will allow you to share things immediately.

Good Luck!


14 posted on 12/16/2015 8:45:42 PM PST by Utilizer (Bacon A'kbar! - In world today are only peaceful people, and the muzlims trying to kill them)
[ Post Reply | Private Reply | To 13 | View Replies]

To: Utilizer

Microsoft probably hired hackers to create these attacks


15 posted on 12/16/2015 8:48:49 PM PST by Bob434
[ Post Reply | Private Reply | To 1 | View Replies]

To: Utilizer
Download and install a version of Mepis Linux.

I'll give it a shot. I'm headed over to PIA to see if I can get it running on Mepis.

16 posted on 12/16/2015 8:51:00 PM PST by Stentor (RIP -- Nicholas Thalasinos.)
[ Post Reply | Private Reply | To 13 | View Replies]

To: Stentor

Mepis is a good distro. A few years back it was my main OS at home - on both my desktop and laptop. I don’t remember why I switched to Ubuntu and now Mint. Could’ve been something as simple as just wanting to try something new...


17 posted on 12/16/2015 9:00:27 PM PST by ThunderSleeps (Stop obarma now! Stop the hussein - insane agenda!)
[ Post Reply | Private Reply | To 16 | View Replies]

To: Stentor

*smile* You should probably wait until you are sober before you install it, just to ensure you do not forget some simple things -like the username password and the root password, just to name a couple. The default network name is “Mepis” but you might want to rename it something else, like “Home”, “Standard”, etc. -something simple but other-than-default. Domain Name preferably as “Home.dom” (for “Home” network, or whatever it is. Just keep them the same for simpicity’s sake).

It is very, very user friendly, and if you get stuck I am usually here in the evenings and can help if you wish.

It also comes with a few rescue tools in case you accidentally change a setting or two and can’t remember what you did to muck it up. :) Also very stable and I have yet to find a machine that did not run it well.

Mepis 8.0 (and 8.5) run well on the minimum 512k of RAM, and 11.xx runs well on 1G of RAM, plus there are 32b and 64b versions as well.

Current version: http://distro.ibiblio.org/mepis/released/

Older versions: http://mepis.mirrorcatalogs.com/released/

You probably want the v11.xx if your machine is at all newer than a few years ago, but I like the increased speed of the earlier versions on the newer machines instead of the latest.

YMMV.

Cheers!

Oh, and I am running both v8.0 and 11.xx in both 32b and 64b on several machines, so if you get stuck I can probably find one within a short period of time to switch to to help you out with specifics. As long as it is not running a current process, that is. Then it might take a bit longer...


18 posted on 12/16/2015 9:30:50 PM PST by Utilizer (Bacon A'kbar! - In world today are only peaceful people, and the muzlims trying to kill them)
[ Post Reply | Private Reply | To 16 | View Replies]

To: ThunderSleeps

That was My reason: trying something new. However, I just can’t get Mint to easily accept minor configuration changes, such as easily recognizing resized partitions. Plus, I too can not get it to share folders with other machines no matter what I do. I finally resorted to keeping files I wished to share on an external HDD and plugging in the USB cable to the other machine to transfer them.


19 posted on 12/16/2015 9:41:56 PM PST by Utilizer (Bacon A'kbar! - In world today are only peaceful people, and the muzlims trying to kill them)
[ Post Reply | Private Reply | To 17 | View Replies]

To: Utilizer

I played with Mint for a few days last week. I was able to mount directories on it from my server, just making the appropriate additions to /etc/fstab.

But if I’m not misktaken, I had to install NFS-utils from the repos first, as it was not installed by default.


20 posted on 12/16/2015 9:55:16 PM PST by kevao (Biblical Jesus: Give your money to the poor. Socialist Jesus: Give your neighbor's money to the poor)
[ Post Reply | Private Reply | To 19 | View Replies]


Navigation: use the links below to view more comments.
first 1-2021-31 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson