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debianDebianDEBIAN:DSA-3421-1:8087C
HistoryDec 16, 2015 - 8:05 p.m.

[SECURITY] [DSA 3421-1] grub2 security update

2015-12-1620:05:50
lists.debian.org
7

6.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C


Debian Security Advisory DSA-3421-1 [email protected]
https://www.debian.org/security/ Luciano Bello
December 16, 2015 https://www.debian.org/security/faq


Package : grub2
CVE ID : CVE-2015-8370
Debian Bug : 807614

Hector Marco and Ismael Ripoll, from Cybersecurity UPV Research Group,
found an integer underflow vulnerability in Grub2, a popular bootloader.
A local attacker can bypass the Grub2 authentication by inserting a
crafted input as username or password.

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

For the oldstable distribution (wheezy), this problem has been fixed
in version 1.99-27+deb7u3.

For the stable distribution (jessie), this problem has been fixed in
version 2.02~beta2-22+deb8u1.

For the unstable distribution (sid), this problem has been fixed in
version 2.02~beta2-33.

We recommend that you upgrade your grub2 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]

6.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

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