CVE Vulnerability

CVE-2021-26706

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.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
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
https://docs.silabs.com/micrium/latest/micrium-common/ Vendor Advisory
Configurations

Configuration 1

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:*:*:*:*:*:*:*
Information

Published : 2022-01-24 01:15

Updated : 2022-02-17 03:43

NVD link : CVE-2021-26706

Mitre link : CVE-2021-26706

Products Affected
No products.
CWE
CWE-190