CVE-2020-8341
Lenovo ThinkPad SMM BIOS Write Protection SPI Protected Range Registers Unset418
Description
In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). After resuming from S3 sleep mode in various versions of BIOS for some Lenovo ThinkPad systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.
INFO
Published Date :
Sept. 1, 2020, 10:15 p.m.
Last Modified :
Sept. 11, 2020, 4:21 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
1.4
Exploitability Score :
0.9
Public PoC/Exploit Available at Github
CVE-2020-8341 has a 1 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-2020-8341
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-2020-8341.
| URL | Resource |
|---|---|
| https://support.lenovo.com/us/en/product_security/LEN-30042 | Vendor 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).
CVE Data Analysis, CVE Monitor, CVE EXP Prediction Based on Deep Learning. 1999-2020年存量CVE数据分析、监控CVE增量更新、基于深度学习的CVE EXP预测和自动化推送
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-8341 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-8341 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 -
Initial Analysis by [email protected]
Sep. 11, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Changed Reference Type https://support.lenovo.com/us/en/product_security/LEN-30042 No Types Assigned https://support.lenovo.com/us/en/product_security/LEN-30042 Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_t490_\(20nx\)_firmware:*:*:*:*:*:*:*:* versions up to (excluding) n2iet90w OR cpe:2.3:h:lenovo:thinkpad_t490_\(20nx\):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_t490_\(20qx\)_firmware:*:*:*:*:*:*:*:* versions up to (excluding) n2iet90w OR cpe:2.3:h:lenovo:thinkpad_t490_\(20qx\):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_t490_\(20rx\)_firmware:*:*:*:*:*:*:*:* versions up to (excluding) n2ret16w OR cpe:2.3:h:lenovo:thinkpad_t490_\(20rx\):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_t490s_\(20nx\)_firmware:*:*:*:*:*:*:*:* versions up to (excluding) n2jet89w OR cpe:2.3:h:lenovo:thinkpad_t490s_\(20nx\):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_t495_drift_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2020-08-30 OR cpe:2.3:h:lenovo:thinkpad_t495_drift:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_t590_\(20nx\)_firmware:*:*:*:*:*:*:*:* versions up to (excluding) n2iet90w OR cpe:2.3:h:lenovo:thinkpad_t590_\(20nx\):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_x1_carbon_\(20qx\)_firmware:*:*:*:*:*:*:*:* versions up to (excluding) n2het54w OR cpe:2.3:h:lenovo:thinkpad_x1_carbon_\(20qx\):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_x1_yoga_\(20qx\)_firmware:*:*:*:*:*:*:*:* versions up to (excluding) n2het54w OR cpe:2.3:h:lenovo:thinkpad_x1_yoga_\(20qx\):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_x390_\(20qx\)_firmware:*:*:*:*:*:*:*:* versions up to (excluding) n2jet89w OR cpe:2.3:h:lenovo:thinkpad_x390_\(20qx\):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:thinkpad_x390_\(20sx\)_firmware:*:*:*:*:*:*:*:* versions up to (excluding) n2set18w OR cpe:2.3:h:lenovo:thinkpad_x390_\(20sx\):-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-8341 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-2020-8341
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.22780
percentile