Dell Client: Additional Information Regarding the March 2021 (GRUB) Vulnerability Disclosure
概要: Vulnerabilities in GRUB (Grand Unified Bootloader) may allow Secure Boot bypass.
この記事は次に適用されます：
この記事は次には適用されません：
この記事は、特定の製品に関連付けられていません。
すべての製品パージョンがこの記事に記載されているわけではありません。
セキュリティ文書の種類
Security KB
CVE識別子
CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749 CVE-2020-27779
CVE-2021-20225 CVE-2021-20233
問題の概要
Affected products:
Dell Client Consumer and Commercial platforms
詳細
Reference:
Operating System provider’s advisories can be found on the following Dell Security Notice. Refer to KB article 183699: DSN-2021-002 Dell Response to the March 2, 2021 Grub2 Vulnerability Disclosure
推奨事項
Frequently Asked Questions:
Q: Which models are affected?
A: Dell Client and Commercial platforms that have UEFI Secure Boot enabled are impacted. Dell recommends that customers review their Operating System provider’s advisories for further information, including appropriate identification and additional mitigation measures.
Customer should follow security best practices and prevent unauthorized physical access to devices. Customer can also take the following measures to further protect themselves from physical attacks.
Q: I use a Windows Operating System. Am I impacted?
A: Yes. Windows Operating Systems are impacted. A malicious actor that has physical access to the platform, or OS administrator privileges, could load a vulnerable GRUB UEFI binary and boot time malware.
Q: What do I need to do to address this vulnerability?
A: GRUB Patch - As part of Linux Operating System vendors’ advisories, they are expected to roll out updated GRUB binaries.
Q: Which models are affected?
A: Dell Client and Commercial platforms that have UEFI Secure Boot enabled are impacted. Dell recommends that customers review their Operating System provider’s advisories for further information, including appropriate identification and additional mitigation measures.
Customer should follow security best practices and prevent unauthorized physical access to devices. Customer can also take the following measures to further protect themselves from physical attacks.
- Set BIOS Admin Password to prevent alteration of the BIOS Setup configuration, such as the boot device, and Secure Boot mode.
- Configure boot settings to only allow booting to the internal boot device.
Q: I use a Windows Operating System. Am I impacted?
A: Yes. Windows Operating Systems are impacted. A malicious actor that has physical access to the platform, or OS administrator privileges, could load a vulnerable GRUB UEFI binary and boot time malware.
Q: What do I need to do to address this vulnerability?
A: GRUB Patch - As part of Linux Operating System vendors’ advisories, they are expected to roll out updated GRUB binaries.
法的免責事項
対象製品
Product Security Information文書のプロパティ
文書番号: 000183697
文書の種類: Security KB
最終更新: 18 9月 2025
バージョン: 4
質問に対する他のDellユーザーからの回答を見つける
サポート サービス
お使いのデバイスがサポート サービスの対象かどうかを確認してください。