CVE-2020-14311
Grub2 Symlink Heap Overflow Vulnerability
Description
There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
INFO
Published Date :
July 31, 2020, 10:15 p.m.
Last Modified :
Nov. 7, 2023, 3:17 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.2
Exploitability Score :
0.8
Public PoC/Exploit Available at Github
CVE-2020-14311 has a 25 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2020-14311
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2020-14311.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2021/09/17/2 | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2021/09/17/4 | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2021/09/21/1 | Mailing List Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 | Issue Tracking Third Party Advisory |
| https://security.gentoo.org/glsa/202104-05 | Third Party Advisory |
| https://usn.ubuntu.com/4432-1/ | Third Party Advisory |
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).
shim-review but not forked to be able to use LFS
Dockerfile Shell
None
Dockerfile
None
Dockerfile Makefile
None
Dockerfile
None
None
Dockerfile Shell
None
Dockerfile
Repository for all information needed for shim-review
Dockerfile
shim-review for Navix
Dockerfile
None
None
Dockerfile Makefile
None
Dockerfile
None
Dockerfile
None
None
PowerShell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-14311 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-14311 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]
Nov. 07, 2023
Action Type Old Value New Value Removed CVSS V3 Red Hat, Inc. AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H Added CVSS V3.1 Red Hat, Inc. AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H -
Modified Analysis by [email protected]
Oct. 19, 2021
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2021/09/17/2 No Types Assigned http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2021/09/17/4 No Types Assigned http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2021/09/21/1 No Types Assigned http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202104-05 No Types Assigned https://security.gentoo.org/glsa/202104-05 Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4432-1/ No Types Assigned https://usn.ubuntu.com/4432-1/ Third Party Advisory Removed CWE NIST CWE-787 Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* -
CVE Modified by [email protected]
Sep. 21, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/09/21/1 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 17, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/09/17/4 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 17, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/09/17/2 [No Types Assigned] -
CVE Modified by [email protected]
May. 01, 2021
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202104-05 [No Types Assigned] -
CVE Modified by [email protected]
Aug. 08, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html [No Types Assigned] -
CVE Modified by [email protected]
Aug. 04, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4432-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 04, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 Issue Tracking, Third Party Advisory Added CWE NIST CWE-787 Added CWE NIST CWE-190 Added CPE Configuration OR *cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* versions up to (excluding) 2.06 Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-14311 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-2020-14311
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.16459
percentile