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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

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

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

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

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Configurations

Configuration 1 (hide)

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:::::::*

Information

Published : 2022-01-23 17:15

Updated : 2022-02-17 07:43

NVD link : CVE-2021-26706

Mitre link : CVE-2021-26706

JSON object : View

CWE

CWE-190

Integer Overflow or Wraparound

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Products Affected

micrium

uc\/lib

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