CVE-2021-26706
Micrium uC/OS uC/LIB Memory Allocation Integer Overflow Vulnerability
Description
An issue was discovered in lib_mem.c in Micrium uC/OS uC/LIB 1.38.x and 1.39.00. The following memory allocation functions do not check for integer overflow when allocating a pool whose size exceeds the address space: Mem_PoolCreate, Mem_DynPoolCreate, and Mem_DynPoolCreateHW. Because these functions use multiplication to calculate the pool sizes, the operation may cause an integer overflow if the arguments are large enough. The resulting memory pool will be smaller than expected and may be exploited by an attacker.
INFO
Published Date :
Jan. 24, 2022, 1:15 a.m.
Last Modified :
Feb. 17, 2022, 3:43 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
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-2021-26706.
| URL | Resource |
|---|---|
| https://docs.silabs.com/micrium/latest/micrium-common/ | Vendor Advisory |
| https://micrium.atlassian.net/wiki/spaces/libdoc138/ | 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-2021-26706 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-26706 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]
Feb. 17, 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://docs.silabs.com/micrium/latest/micrium-common/ No Types Assigned https://docs.silabs.com/micrium/latest/micrium-common/ Vendor Advisory Changed Reference Type https://micrium.atlassian.net/wiki/spaces/libdoc138/ No Types Assigned https://micrium.atlassian.net/wiki/spaces/libdoc138/ 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 CWE NIST CWE-190 Added CPE Configuration OR *cpe:2.3:a:micrium:uc\/lib:1.38.00:*:*:*:*:*:*:* *cpe:2.3:a:micrium:uc\/lib:1.38.01:*:*:*:*:*:*:* *cpe:2.3:a:micrium:uc\/lib:1.38.02:*:*:*:*:*:*:* *cpe:2.3:a:micrium:uc\/lib:1.38.03:*:*:*:*:*:*:* *cpe:2.3:a:micrium:uc\/lib:1.38.04:*:*:*:*:*:*:* *cpe:2.3:a:micrium:uc\/lib:1.38.05:*:*:*:*:*:*:* *cpe:2.3:a:micrium:uc\/lib:1.39.00:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-26706 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-2021-26706
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.33 }} 0.03%
score
0.71198
percentile