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CVE-2021-26706

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 24-01-2022 02:15
Last modified: - 17-02-2022 04:43
Total changes: - 2

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Low
Attack complexity
Network
Attack vector
High
Availability
High
Confidentiality
High
Integrity
None
Privileges required
Unchanged
Scope
None
User interaction
9.8
Base score
3.9
5.9
Exploitability score
Impact score
 

Verification logic

OR
vendor=micrium AND product=uc\/lib AND version=1.38.00
vendor=micrium AND product=uc\/lib AND version=1.38.01
vendor=micrium AND product=uc\/lib AND version=1.38.02
vendor=micrium AND product=uc\/lib AND version=1.38.03
vendor=micrium AND product=uc\/lib AND version=1.38.04
vendor=micrium AND product=uc\/lib AND version=1.38.05
vendor=micrium AND product=uc\/lib AND version=1.39.00
 

Reference

 


Keywords

NVD

 

CVE-2021-26706

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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