CVE-2015-8370
Grub2 Integer Underflows
Description
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.
INFO
Published Date :
Dec. 16, 2015, 9:59 p.m.
Last Modified :
Jan. 16, 2024, 1:15 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
10.0
Exploitability Score :
3.4
Public PoC/Exploit Available at Github
CVE-2015-8370 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2015-8370.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
My solutions to some CTF challenges and a list of interesting resources about pwning stuff
ctf write-ups exploitation heap-exploitation pwning
Python C++ C
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2015-8370 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2015-8370 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jan. 16, 2024
Action Type Old Value New Value Added Reference MITRE http://www.openwall.com/lists/oss-security/2024/01/15/3 [No types assigned] -
CVE Modified by [email protected]
Oct. 09, 2018
Action Type Old Value New Value Removed Reference http://www.securityfocus.com/archive/1/archive/1/537115/100/0/threaded [No Types Assigned] Added Reference http://www.securityfocus.com/archive/1/537115/100/0/threaded [No Types Assigned] -
CVE Modified by [email protected]
Dec. 07, 2016
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html [No Types Assigned] Added Reference http://www.debian.org/security/2015/dsa-3421 [No Types Assigned] Added Reference http://www.ubuntu.com/usn/USN-2836-1 [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html [No Types Assigned] Added Reference http://seclists.org/fulldisclosure/2015/Dec/69 [No Types Assigned] Added Reference http://rhn.redhat.com/errata/RHSA-2015-2623.html [No Types Assigned] Added Reference http://www.securitytracker.com/id/1034422 [No Types Assigned] Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html [No Types Assigned] Added Reference https://security.gentoo.org/glsa/201512-03 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/79358 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 15, 2016
Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html -
Modified Analysis by [email protected]
Mar. 30, 2016
Action Type Old Value New Value Changed Reference Type http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html No Types Assigned http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html Patch -
CVE Modified by [email protected]
Jan. 22, 2016
Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html -
Modified Analysis by [email protected]
Dec. 17, 2015
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:a:gnu:grub2:1.98:*:*:*:*:*:*:* *cpe:2.3:a:gnu:grub2:1.99:*:*:*:*:*:*:* *cpe:2.3:a:gnu:grub2:2.00:*:*:*:*:*:*:* *cpe:2.3:a:gnu:grub2:2.01:*:*:*:*:*:*:* *cpe:2.3:a:gnu:grub2:2.02:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Added CVSS V2 (AV:L/AC:M/Au:N/C:C/I:C/A:C) Changed Reference Type http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html No Types Assigned http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html Exploit Added CWE CWE-264 -
Initial Analysis by [email protected]
Dec. 17, 2015
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2015-8370 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2015-8370
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.11 }} 0.00%
score
0.41977
percentile