CVE-2020-28974
Linux Kernel fbcon Slab-Out-Of-Bounds Read Vulnerability
Description
A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.
INFO
Published Date :
Nov. 20, 2020, 6:15 p.m.
Last Modified :
Jan. 27, 2021, 7:44 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.7
Exploitability Score :
0.3
Public PoC/Exploit Available at Github
CVE-2020-28974 has a 2 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-2020-28974.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2020/11/25/1 | Mailing List Third Party Advisory |
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7 | Release Notes Vendor Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804 | Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html | Third Party Advisory |
| https://seclists.org/oss-sec/2020/q4/104 | Exploit Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210108-0003/ | 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).
Map Vulnerabilities into Different Layers of the Container Image
Python
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-28974 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-28974 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 -
Modified Analysis by [email protected]
Jan. 27, 2021
Action Type Old Value New Value Removed CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:N/A:C) Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:C) Removed CVSS V3.1 NIST AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H Added CVSS V3.1 NIST AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20210108-0003/ No Types Assigned https://security.netapp.com/advisory/ntap-20210108-0003/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 08, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210108-0003/ [No Types Assigned] -
CVE Modified by [email protected]
Dec. 18, 2020
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html [No Types Assigned] -
CVE Modified by [email protected]
Dec. 11, 2020
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html [No Types Assigned] -
Reanalysis by [email protected]
Dec. 07, 2020
Action Type Old Value New Value Removed CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Added CVSS V3.1 NIST AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H -
Initial Analysis by [email protected]
Dec. 01, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:N/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2020/11/25/1 No Types Assigned http://www.openwall.com/lists/oss-security/2020/11/25/1 Mailing List, Third Party Advisory Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7 Release Notes, Vendor Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804 Patch, Vendor Advisory Changed Reference Type https://seclists.org/oss-sec/2020/q4/104 No Types Assigned https://seclists.org/oss-sec/2020/q4/104 Exploit, Mailing List, Third Party Advisory Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.9.7 -
CVE Modified by [email protected]
Nov. 25, 2020
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2020/11/25/1 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-28974 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-2020-28974
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.05635
percentile