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Grub2 Authentication Bypass

Grub2 Authentication Bypass
Posted Dec 15, 2015
Authored by Hector Marco, Ismael Ripoll

Grub2 versions 1.98 through 2.02 suffer from an authentication bypass vulnerability.

tags | advisory, bypass
advisories | CVE-2015-8370
SHA-256 | 83bd7487636061aa2b0800d6365ebfbe91d7c0307ab06febcf641741b08068f4

Grub2 Authentication Bypass

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Hi everyone,

A vulnerability in Grub2 (Back to 28) has been found. Versions from 1.98
(December, 2009) to 2.02 (December, 2015) are affected. The vulnerability can be
exploited under certain circumstances, allowing local attackers to bypass any
kind of authentication (plain or hashed passwords). And so, the attacker may
take control of the computer.


More details at:
http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html


Regards,
Hector Marco & Ismael Ripoll.


--
Dr. Hector Marco-Gisbert @ http://hmarco.org/
Cyber Security Researcher @ http://cybersecurity.upv.es
Universitat Politècnica de València (Spain)
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