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Cryptsetup 2:1.7.3-2 Root Initramfs Shell

Cryptsetup 2:1.7.3-2 Root Initramfs Shell
Posted Nov 16, 2016
Authored by Hector Marco, Ismael Ripoll

A vulnerability in Cryptsetup, concretely in the scripts that unlock the system partition when the partition is ciphered using LUKS (Linux Unified Key Setup). This vulnerability allows to obtain a root initramfs shell on affected systems. The vulnerability is very reliable because it doesn't depend on specific systems or configurations. Attackers can copy, modify or destroy the hard disc as well as set up the network to data. In cloud environments it is also possible to remotely exploit this vulnerability without having "physical access". Cryptsetup versions 2:1.7.3-2 and below are affected.

tags | advisory, shell, root
systems | linux
advisories | CVE-2016-4484
MD5 | 7c810b6c29e27d96a80e6a4b8a3f8d03

Cryptsetup 2:1.7.3-2 Root Initramfs Shell

Change Mirror Download
Hello All,


Affected package
----------------
Cryptsetup <= 2:1


CVE-ID
------
CVE-2016-4484


Description
-----------
A vulnerability in Cryptsetup, concretely in the scripts that unlock the
system partition when the partition is ciphered using LUKS (Linux
Unified Key Setup).

This vulnerability allows to obtain a root initramfs shell on affected
systems. The vulnerability is very reliable because it doesn't depend on
specific systems or configurations. Attackers can copy, modify or
destroy the hard disc as well as set up the network to exflitrate data.

In cloud environments it is also possible to remotely exploit this
vulnerability without having "physical access."


Full description:
-----------------
http://hmarco.org/bugs/CVE-2016-4484/CVE-2016-4484_cryptsetup_initrd_shell.html


Regards,
Hector Marco & Ismael Ripoll.

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