the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
  What's the CVSS score of your company?
Vulnerability Feeds & WidgetsNew  

Vulnerability Details : CVE-2015-8370

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.
Publish Date : 2015-12-16 Last Update Date : 2018-10-09
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceMemory corruptionBypass a restriction or similarObtain Information
CWE ID 264

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2015:2623: grub2 security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20152623 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2015-8370

# Product Type Vendor Product Version Update Edition Language
1 OS Fedoraproject Fedora 23 * * * Version Details Vulnerabilities
2 Application GNU Grub2 1.98 * * * Version Details Vulnerabilities
3 Application GNU Grub2 1.99 * * * Version Details Vulnerabilities
4 Application GNU Grub2 2.00 * * * Version Details Vulnerabilities
5 Application GNU Grub2 2.01 * * * Version Details Vulnerabilities
6 Application GNU Grub2 2.02 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Fedoraproject Fedora 1
GNU Grub2 5

- References For CVE-2015-8370
GENTOO GLSA-201512-03
FEDORA FEDORA-2015-90c27b6e91
SECTRACK 1034422
BUGTRAQ 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]
FULLDISC 20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]
SUSE openSUSE-SU-2016:0036
SUSE SUSE-SU-2015:2386
SUSE openSUSE-SU-2015:2392
SUSE SUSE-SU-2015:2399
SUSE SUSE-SU-2015:2385
SUSE openSUSE-SU-2015:2375
SUSE SUSE-SU-2015:2387
BID 79358 GNU GRUB2 CVE-2015-8370 Multiple Local Authentication Bypass Vulnerabilities Release Date:2016-01-15 CONFIRM CONFIRM
MLIST [oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]
REDHAT RHSA-2015:2623
FEDORA FEDORA-2015-cebe5133e7

- Metasploit Modules Related To CVE-2015-8370

There are not any metasploit modules related to this CVE entry (Please visit for more information)

CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.