CVE-2021-26943
ASUS UX360CA BIOS Privilege Escalation
Description
The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to overwrite nearly arbitrary physical memory locations, including SMRAM, and execute arbitrary code in the SMM (issue 3 of 3).
INFO
Published Date :
March 31, 2021, 8:15 p.m.
Last Modified :
April 7, 2021, 2:12 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
6.0
Exploitability Score :
1.5
Public PoC/Exploit Available at Github
CVE-2021-26943 has a 5 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-2021-26943.
| URL | Resource |
|---|---|
| https://www.asus.com/support/FAQ/1045541/ | Exploit Vendor Advisory |
| https://www.youtube.com/watch?v=1H3AfaVyeuk | Exploit 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).
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
None
None
None
The report and the exploit of CVE-2021-26943, the kernel-to-SMM local privilege escalation vulnerability in ASUS UX360CA BIOS version 303.
smm uefi vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-26943 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-26943 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]
Apr. 07, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Changed Reference Type https://www.asus.com/support/FAQ/1045541/ No Types Assigned https://www.asus.com/support/FAQ/1045541/ Exploit, Vendor Advisory Changed Reference Type https://www.youtube.com/watch?v=1H3AfaVyeuk No Types Assigned https://www.youtube.com/watch?v=1H3AfaVyeuk Exploit, Third Party Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration AND OR *cpe:2.3:o:asus:ux360ca_bios:*:*:*:*:*:*:*:* versions up to (excluding) 304 OR cpe:2.3:h:asus:ux360ca:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-26943 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-2021-26943
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
0.20078
percentile