Dell BIOS SMRAM input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.9$5k-$25k0.00

A vulnerability was found in Dell BIOS (version now known) and classified as critical. This issue affects some unknown processing of the component SMRAM. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.

The weakness was presented 01/18/2023. It is possible to read the advisory at dell.com. The identification of this vulnerability is CVE-2022-34393 since 06/23/2022. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/18/2023).

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

Productinfo

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Vendor

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.4
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (Dell): 🔍

CVSSv2info

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

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

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

06/23/2022 🔍
01/18/2023 +209 days 🔍
01/18/2023 +0 days 🔍
02/15/2023 +28 days 🔍

Sourcesinfo

Vendor: dell.com

Advisory: dell.com
Status: Confirmed

CVE: CVE-2022-34393 (🔍)

Entryinfo

Created: 01/18/2023 12:32 PM
Updated: 02/15/2023 07:43 AM
Changes: 01/18/2023 12:32 PM (45), 02/15/2023 07:43 AM (1)
Complete: 🔍
Cache ID: 18:79B:40

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