9.8
CRITICAL
CVE-2021-27435
ARM mbed Memory Allocation Wrap-around Vulnerability
Description

ARM mbed product Version 6.3.0 is vulnerable to integer wrap-around in malloc_wrapper function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

INFO

Published Date :

May 3, 2022, 9:15 p.m.

Last Modified :

Nov. 21, 2024, 5:57 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-27435 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 mbed
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-2021-27435.

URL Resource
https://github.com/ARMmbed/mbed-os/pull/14408 Exploit Issue Tracking Patch Third Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 Third Party Advisory US Government Resource
https://github.com/ARMmbed/mbed-os/pull/14408 Exploit Issue Tracking Patch Third Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 Third Party Advisory US Government Resource

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).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-27435 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-27435 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://github.com/ARMmbed/mbed-os/pull/14408
    Added Reference https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    May. 13, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/ARMmbed/mbed-os/pull/14408 No Types Assigned https://github.com/ARMmbed/mbed-os/pull/14408 Exploit, Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 No Types Assigned https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 Third Party Advisory, US Government Resource
    Added CPE Configuration OR *cpe:2.3:o:arm:mbed:6.3.0:*:*:*:*:*:*:*
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-2021-27435 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-2021-27435 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

16.14 }} 15.72%

score

0.95951

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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