InsydeH2O up to 5.5 SMM Driver GetVariable privilege escalation

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

Summaryinfo

A vulnerability marked as problematic has been reported in InsydeH2O up to 5.5. This vulnerability affects the function GetVariable of the component SMM Driver. The manipulation leads to an unknown weakness. This vulnerability is referenced as CVE-2022-36338. No exploit is available.

Detailsinfo

A vulnerability was found in InsydeH2O up to 5.5. It has been rated as problematic. This issue affects the function GetVariable of the component SMM Driver. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver FwBlockServiceSmm, creating SMM, leads to arbitrary code execution. An attacker can replace the pointer to the UEFI boot service GetVariable with a pointer to malware, and then generate a software SMI.

The weakness was published 09/24/2022 as BRLY-2022-017. The advisory is shared at binarly.io. The identification of this vulnerability is CVE-2022-36338 since 07/21/2022. Technical details are known, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

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: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/21/2022 🔍
09/24/2022 +65 days 🔍
09/24/2022 +0 days 🔍
10/23/2022 +29 days 🔍

Sourcesinfo

Advisory: BRLY-2022-017
Status: Not defined

CVE: CVE-2022-36338 (🔍)
GCVE (CVE): GCVE-0-2022-36338
GCVE (VulDB): GCVE-100-209465

Entryinfo

Created: 09/24/2022 08:36
Updated: 10/23/2022 09:27
Changes: 09/24/2022 08:36 (37), 10/23/2022 09:27 (11)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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