InsydeH2O SMM FreePool/LocateHandleBuffer/HandleProtocol EFI_BOOT_SERVICES allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in InsydeH2O and classified as problematic. The affected element is the function FreePool/LocateHandleBuffer/HandleProtocol of the component SMM. Executing a manipulation of the argument EFI_BOOT_SERVICES can lead to allocation of resources. The identification of this vulnerability is CVE-2021-41839. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in InsydeH2O (the affected version is unknown) and classified as problematic. This vulnerability affects the function FreePool/LocateHandleBuffer/HandleProtocol of the component SMM. The manipulation of the argument EFI_BOOT_SERVICES with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in NvmExpressDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

The weakness was shared 02/03/2022. The advisory is available at insyde.com. This vulnerability was named CVE-2021-41839 since 10/01/2021. Technical details are known, but there is no available exploit.

Upgrading eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/01/2021 🔍
02/03/2022 +125 days 🔍
02/03/2022 +0 days 🔍
11/04/2025 +1370 days 🔍

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2021-41839 (🔍)
GCVE (CVE): GCVE-0-2021-41839
GCVE (VulDB): GCVE-100-192154

Entryinfo

Created: 02/03/2022 08:16
Updated: 11/04/2025 23:16
Changes: 02/03/2022 08:16 (38), 02/05/2022 07:12 (1), 11/04/2025 23:16 (34)
Complete: 🔍
Cache ID: 216::103

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