3.4
LOW
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 :

July 12, 2022, 5:42 p.m.

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.

ID Vendor Product Action
1 Arm cortex-m33_firmware
2 Arm cortex-m35p_firmware
3 Arm cortex-m55_firmware
4 Arm china_star-mc1_firmware
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

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++

Updated: 3 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : July 10, 2024, 11:46 a.m. This repo has been linked 1 different CVEs too.

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 [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:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
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

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability