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Sicherheit: Pufferüberlauf in GRUB
Aktuelle Meldungen Distributionen
Name: Pufferüberlauf in GRUB
ID: USN-2836-1
Distribution: Ubuntu
Plattformen: Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 15.04, Ubuntu 15.10
Datum: Di, 15. Dezember 2015, 22:48
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8370
Applikationen: GRUB

Originalnachricht

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==========================================================================
Ubuntu Security Notice USN-2836-1
December 15, 2015

grub2 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

GRUB password protection can be bypassed.

Software Description:
- grub2: GRand Unified Bootloader

Details:

Hector Marco and Ismael Ripoll discovered that GRUB incorrectly handled
the backspace key when configured to use authentication. A local attacker
could use this issue to bypass GRUB password protection.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 15.10:
grub2-common 2.02~beta2-29ubuntu0.2

Ubuntu 15.04:
grub2-common 2.02~beta2-22ubuntu1.4

Ubuntu 14.04 LTS:
grub2-common 2.02~beta2-9ubuntu1.6

Ubuntu 12.04 LTS:
grub2-common 1.99-21ubuntu3.19

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2836-1
CVE-2015-8370

Package Information:
https://launchpad.net/ubuntu/+source/grub2/2.02~beta2-29ubuntu0.2
https://launchpad.net/ubuntu/+source/grub2/2.02~beta2-22ubuntu1.4
https://launchpad.net/ubuntu/+source/grub2/2.02~beta2-9ubuntu1.6
https://launchpad.net/ubuntu/+source/grub2/1.99-21ubuntu3.19



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