Dell G7 17 7790 up to 1.13.1 UEFI BIOS Boot Service use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Dell G7 17 7790 up to 1.13.1. This issue affects some unknown processing of the component UEFI BIOS Boot Service. Executing a manipulation can lead to use after free. This vulnerability appears as CVE-2020-5378. The physical device can be targeted for the attack. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Dell G7 17 7790 up to 1.13.1. It has been declared as critical. This vulnerability affects an unknown code block of the component UEFI BIOS Boot Service. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Dell G7 17 7790 BIOS versions prior to 1.13.2 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in System Management Mode (SMM).

The weakness was presented 09/02/2020 (Website). The advisory is shared for download at dell.com. This vulnerability was named CVE-2020-5378 since 01/03/2020. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.13.2 eliminates this vulnerability.

See VDB-160647 and VDB-160649 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.8
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: G7 17 7790 1.13.2

Timelineinfo

01/03/2020 🔍
09/02/2020 +243 days 🔍
09/03/2020 +1 days 🔍
11/12/2020 +70 days 🔍

Sourcesinfo

Vendor: dell.com

Advisory: dell.com
Status: Not defined

CVE: CVE-2020-5378 (🔍)
GCVE (CVE): GCVE-0-2020-5378
GCVE (VulDB): GCVE-100-160648
See also: 🔍

Entryinfo

Created: 09/03/2020 08:01
Updated: 11/12/2020 15:07
Changes: 09/03/2020 08:01 (40), 09/03/2020 08:06 (11), 11/11/2020 08:12 (1), 11/12/2020 15:07 (1)
Complete: 🔍
Cache ID: 216::103

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