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.
a533475e588d0a35025183dd93ff60b65d867075cd009e955f89a1138f7cd7fe
Hello All,
Affected package
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Cryptsetup <= 2:1
CVE-ID
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CVE-2016-4484
Description
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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:
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http://hmarco.org/bugs/CVE-2016-4484/CVE-2016-4484_cryptsetup_initrd_shell.html
Regards,
Hector Marco & Ismael Ripoll.