Dell BIOS DMA Transaction toctou

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Dell BIOS. This impacts an unknown function of the component DMA Transaction Handler. Such manipulation leads to toctou. This vulnerability is documented as CVE-2023-28075. The attack can be executed directly on the physical device. There is not any exploit available.

Detailsinfo

A vulnerability was found in Dell BIOS (version unknown). It has been rated as critical. Affected by this issue is an unknown function of the component DMA Transaction Handler. The manipulation with an unknown input leads to a toctou vulnerability. Using CWE to declare the problem leads to CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Dell BIOS contain a Time-of-check Time-of-use vulnerability in BIOS. A local authenticated malicious user with physical access to the system could potentially exploit this vulnerability by using a specifically timed DMA transaction during an SMI in order to gain arbitrary code execution on the system.

The weakness was released 08/16/2023 as dsa-2023-152. The advisory is shared for download at dell.com. This vulnerability is handled as CVE-2023-28075 since 03/10/2023. There are neither technical details nor an exploit publicly available.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 6.1
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.3
NVD Vector: 🔍

CNA Base Score: 6.9
CNA Vector (Dell): 🔍

CVSSv2info

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

Exploitinginfo

Class: Toctou
CWE: CWE-367 / CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
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

03/10/2023 🔍
08/16/2023 +158 days 🔍
08/16/2023 +0 days 🔍
09/10/2023 +25 days 🔍

Sourcesinfo

Vendor: dell.com

Advisory: dsa-2023-152
Status: Confirmed

CVE: CVE-2023-28075 (🔍)
GCVE (CVE): GCVE-0-2023-28075
GCVE (VulDB): GCVE-100-237356

Entryinfo

Created: 08/16/2023 22:45
Updated: 09/10/2023 15:17
Changes: 08/16/2023 22:45 (47), 09/10/2023 15:17 (11)
Complete: 🔍
Cache ID: 216::103

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