CVE-2021-35465
Arm Cortex-M33/Cortex-M35P/Cortex-M55/China STAR-MC1 Secure Exception Access Vulnerability
Description
Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a VLLDM instruction. A Non-secure handler may have read or write access to part of a Secure context. This affects Arm Cortex-M33 r0p0 through r1p0, Arm Cortex-M35P r0, Arm Cortex-M55 r0p0 through r1p0, and Arm China STAR-MC1 (in the STAR SE configuration).
INFO
Published Date :
Aug. 23, 2021, 1:15 p.m.
Last Modified :
Nov. 21, 2024, 6:12 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
2.5
Exploitability Score :
0.8
Public PoC/Exploit Available at Github
CVE-2021-35465 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-2021-35465
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-2021-35465.
| URL | Resource |
|---|---|
| https://developer.arm.com/support/arm-security-updates | Vendor Advisory |
| https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability | Vendor Advisory |
| https://developer.arm.com/support/arm-security-updates | Vendor Advisory |
| https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability | 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).
None
CMake Dockerfile 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-2021-35465 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-35465 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://developer.arm.com/support/arm-security-updates Added Reference https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE CWE-863 NVD-CWE-Other -
Reanalysis by [email protected]
Sep. 23, 2021
Action Type Old Value New Value Changed CPE Configuration AND OR *cpe:2.3:o:arm:cortex-m35p_firmware:r0:*:*:*:*:*:*:* OR cpe:2.3:h:arm:cortex-35p:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:arm:cortex-m35p_firmware:r0:*:*:*:*:*:*:* OR cpe:2.3:h:arm:cortex-m35p:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Sep. 22, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:arm:cortex-35p_firmware:r0:*:*:*:*:*:*:* OR *cpe:2.3:o:arm:cortex-m35p_firmware:r0:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Aug. 28, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N Changed Reference Type https://developer.arm.com/support/arm-security-updates No Types Assigned https://developer.arm.com/support/arm-security-updates Vendor Advisory Changed Reference Type https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability No Types Assigned https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability Vendor Advisory Added CWE NIST CWE-863 Added CPE Configuration AND OR *cpe:2.3:o:arm:cortex-m33_firmware:*:*:*:*:*:*:*:* versions from (including) r0p0 up to (including) r1p0 OR cpe:2.3:h:arm:cortex-m33:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:arm:cortex-35p_firmware:r0:*:*:*:*:*:*:* OR cpe:2.3:h:arm:cortex-35p:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:arm:cortex-m55_firmware:*:*:*:*:*:*:*:* versions from (including) r0p0 up to (including) r1p0 OR cpe:2.3:h:arm:cortex-m55:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:arm:china_star-mc1_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:arm:china_star-mc1:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-35465 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-2021-35465
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
0.18875
percentile