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DSA-2020-203: Dell Client Platform Security Update for UEFI BIOS Boot Services Overwrite Vulnerabilities

Summary: Dell Client Consumer Platforms have been updated to address a pointer issue vulnerability.

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Impact

Medium

Details

  • CVE-2020-5376

    Dell Inspiron 7347 BIOS versions prior to A13 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).

    CVSSV3 Base Score: 6.8 (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

  • CVE-2020-5379

    Dell Inspiron 7352 BIOS versions prior to A12 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).

    CVSSV3 Base Score: 6.8 (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

  • CVE-2020-5378

    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).

    CVSSV3 Base Score: 6.8 (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

  • CVE-2020-5376

    Dell Inspiron 7347 BIOS versions prior to A13 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).

    CVSSV3 Base Score: 6.8 (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

  • CVE-2020-5379

    Dell Inspiron 7352 BIOS versions prior to A12 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).

    CVSSV3 Base Score: 6.8 (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

  • CVE-2020-5378

    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).

    CVSSV3 Base Score: 6.8 (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Dell Technologies recommends all customers consider both the CVSS base score and any relevant temporal and environmental scores that may impact the potential severity associated with a particular security vulnerability.

Affected Products & Remediation

Affected products:

Dell Client Consumer Platforms (see Resolution section below for complete list of affected products)



Remediation:

Customers should use the latest releases available from Dell support when updating their systems.

Please visit the Drivers and Downloads site for updates on the applicable products. To learn more, visit the Dell Knowledge Base article Dell BIOS Updates, and download the update for your Dell computer.

SLN322616_en_US__1icon Notes:
  • Prior to installing the update, please ensure Windows Updates are up to date.
  • The dates listed are estimated availability dates and are subject to change without notice.
  • Update versions in the table below are the first releases with the updates to address the security vulnerabilities. Releases at and above these versions will include the security updates.
  • Release dates below are in US format of MM/DD/YYYY.
  • Expected release dates are in the Month YYYY format.


Dell Client Consumer Products Affected

The following is a list of impacted products and expected release dates:

Product

Update BIOS Version
(or greater)

Release Date (MM/DD/YYYY)
Expected Release ( Month /YYYY)

Dell G7 17 7790

1.3.2

6/10/2020

Inspiron 7347

A13

7/14/2020

Inspiron 7352

A14

7/14/2020

Affected products:

Dell Client Consumer Platforms (see Resolution section below for complete list of affected products)



Remediation:

Customers should use the latest releases available from Dell support when updating their systems.

Please visit the Drivers and Downloads site for updates on the applicable products. To learn more, visit the Dell Knowledge Base article Dell BIOS Updates, and download the update for your Dell computer.

SLN322616_en_US__1icon Notes:
  • Prior to installing the update, please ensure Windows Updates are up to date.
  • The dates listed are estimated availability dates and are subject to change without notice.
  • Update versions in the table below are the first releases with the updates to address the security vulnerabilities. Releases at and above these versions will include the security updates.
  • Release dates below are in US format of MM/DD/YYYY.
  • Expected release dates are in the Month YYYY format.


Dell Client Consumer Products Affected

The following is a list of impacted products and expected release dates:

Product

Update BIOS Version
(or greater)

Release Date (MM/DD/YYYY)
Expected Release ( Month /YYYY)

Dell G7 17 7790

1.3.2

6/10/2020

Inspiron 7347

A13

7/14/2020

Inspiron 7352

A14

7/14/2020

Acknowledgements

Dell would like to thank yngweijw of IIE Varas, f1sh and Menghao Li of IIE Varas for reporting these vulnerabilities.

Related Information

Dell Security Advisories and Notices
Dell Vulnerability Response Policy
CVSS Scoring Guide

Legal Disclaimer

Affected Products

Desktops & All-in-Ones, Inspiron, G Series, G Series, Inspiron, Tablets
Article Properties
Article Number: 000125430
Article Type: Dell Security Advisory
Last Modified: 21 Feb 2021
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.
Article Properties
Article Number: 000125430
Article Type: Dell Security Advisory
Last Modified: 21 Feb 2021
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.