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CVE-2015-8370

Date: December 15, 2015

Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an "Off-by-two" or "Out of bounds overwrite" memory error.

Language: C

Severity Score

7.4

Related Resources (28)

Url: http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html

Url: http://seclists.org/fulldisclosure/2015/Dec/69

Url: http://www.openwall.com/lists/oss-security/2015/12/15/6

Url: http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html

Url: http://www.openwall.com/lists/oss-security/2024/01/15/3

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2015-8370

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

Url: http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html

Url: http://www.ubuntu.com/usn/USN-2836-1

Url: http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html

Url: http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html

Url: http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html

Url: http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html

Url: http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html

Url: http://www.debian.org/security/2015/dsa-3421

Url: http://rhn.redhat.com/errata/RHSA-2015-2623.html

Url: http://www.securityfocus.com/bid/79358

Url: http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html

Url: https://security.gentoo.org/glsa/201512-03

Url: http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

Url: https://access.redhat.com/security/cve/CVE-2015-8370

Url: https://security-tracker.debian.org/tracker/CVE-2015-8370

Url: http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html

Url: http://www.securitytracker.com/id/1034422

Url: https://nvd.nist.gov/vuln/detail/CVE-2015-8370

Url: http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html

Url: http://www.securityfocus.com/archive/1/537115/100/0/threaded

Url: https://www.mend.io/vulnerability-database/CVE-2015-8370

Severity Score

7.4

Weakness Type (CWE)

Integer Underflow (Wrap or Wraparound)

CWE-191

Permissions, Privileges, and Access Control

CWE-264

CVSS v3.1

Base Score:	7.4
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	HIGH
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	6.9
Access Vector (AV):	LOCAL
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	COMPLETE
Integrity (I):	COMPLETE
Availability (A):	COMPLETE
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2015-8370

Date: December 15, 2015

Language: C

Severity Score

Related Resources (28)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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