Vulnerability-Lookup

BDU:2022-05895 (CVE-2020-15705)

Vulnerability from fstec – Published: 2022-09-23 – Updated: 2022-09-28 – View on bdu.fstec.ru Fixed

Title

Уязвимость реализации протокола безопасной загрузки Secure Boot загрузчика операционных систем Grub2, позволяющая нарушителю выполнить произвольный код и получить полный контроль над устройством

Summary

Уязвимость реализации протокола безопасной загрузки Secure Boot загрузчика операционных систем Grub2 связана с некорректной проверкой криптографической подписи. Эксплуатация уязвимости может позволить нарушителю выполнить произвольный код и получить полный контроль над устройством

Severity

6.0 (Medium) CVSS 2.0


                      
                        AV:L/AC:H/Au:S/C:C/I:C/A:C

6.4 (Medium) CVSS 3.0


                      
                        CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Class

Architecture vulnerability

Status

Confirmed by the vendor

Exploitation

Spoofing, Functionality abuse

Incidents

Being clarified

Remediation

Software update

CWE

CWE-347 - Некорректная проверка криптографической подписи
CWE-440 - Нарушение ожидаемого поведения

Aliases

CVE-2020-15705

References

18 references

URL
https://redos.red-soft.ru/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti…
https://git.savannah.gnu.org/gitweb/?p=grub.git&view=view+git+repository
https://access.redhat.com/security/cve/cve-2020-15705
https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot/
https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/m…
https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/m…
https://ubuntu.com/security/notices/USN-4432-1
http://www.openwall.com/lists/oss-security/2020/07/29/3
http://www.openwall.com/lists/oss-security/2021/03/02/3
http://www.openwall.com/lists/oss-security/2021/09/17/2
http://www.openwall.com/lists/oss-security/2021/09/17/4
http://www.openwall.com/lists/oss-security/2021/09/21/1
https://msrc.microsoft.com/update-guide/en-US/vulnerability/ADV200011
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass
https://security.gentoo.org/glsa/202104-05
https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/
https://nvd.nist.gov/vuln/detail/CVE-2020-15705
https://goslinux.fssp.gov.ru/2726972/

Impacted products

26 products from 9 vendors

Vendors

Microsoft Corp, Red Hat, Inc., Canonical Ltd., Novell Inc., Сообщество свободного программного обеспечения, Erich Boleyn, ООО «Ред Софт», ФССП России

Products

Windows 8.1, Windows Server 2012, Windows Server 2012 R2, Windows 10, Windows 10 1607, Red Hat Enterprise Linux, Windows Server 2016, Windows RT 8.1, Windows Server 2012 R2 (Server Core installation), Windows Server 2016 (Server Core installation), Ubuntu, Windows 10 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), OpenSUSE Leap, Debian GNU/Linux, Grub2, Windows 10 20H2, Windows Server 20H2 (Server Core Installation), Windows 10 21H1, Windows Server 2022, Windows Server 2022 (Server Core installation), Windows 11, РЕД ОС (запись в едином реестре российских программ №3751), ОС ТД АИС ФССП России, Windows Server 2012 (Server Core installation)

Versions

- (Windows 8.1), - (Windows Server 2012), - (Windows Server 2012 R2), - (Windows 10), - (Windows 10 1607), 7 (Red Hat Enterprise Linux), - (Windows Server 2016), - (Windows RT 8.1), - (Windows Server 2012 R2 (Server Core installation)), - (Windows Server 2016 (Server Core installation)), 18.04 LTS (Ubuntu), - (Windows 10 1809), - (Windows Server 2019), - (Windows Server 2019 (Server Core installation)), 8 (Red Hat Enterprise Linux), 15.1 (OpenSUSE Leap), 14.04 ESM (Ubuntu), 10 (Debian GNU/Linux), 7.6 Extended Update Support (Red Hat Enterprise Linux), 7.2 Advanced Update Support (Red Hat Enterprise Linux), 7.3 Advanced Update Support (Red Hat Enterprise Linux), 7.3 Telco Extended Update Support (Red Hat Enterprise Linux), 7.3 Update Services for SAP Solutions (Red Hat Enterprise Linux), 7.4 Telco Extended Update Support (Red Hat Enterprise Linux), 8.0 Update Services for SAP Solutions (Red Hat Enterprise Linux), 7.4 Advanced Update Support (Red Hat Enterprise Linux), 20.04 LTS (Ubuntu), 15.2 (OpenSUSE Leap), 8.1 Extended Update Support (Red Hat Enterprise Linux), 7.7 Extended Update Support (Red Hat Enterprise Linux), до 2.04 включительно (Grub2), - (Windows 10 20H2), - (Windows Server 20H2 (Server Core Installation)), 16.04 ESM (Ubuntu), - (Windows 10 21H1), 7.4 Update Services for SAP Solutions (Red Hat Enterprise Linux), - (Windows Server 2022), - (Windows Server 2022 (Server Core installation)), - (Windows 11), 7.3 (РЕД ОС), ИК6 (ОС ТД АИС ФССП России), - (Windows Server 2012 (Server Core installation))

Product types

Operating system

Platforms

Microsoft Corp Windows 8.1 - 64-bit, Microsoft Corp Windows 8.1 - 32-bit, Microsoft Corp Windows Server 2012 -, Microsoft Corp Windows Server 2012 R2 -, Microsoft Corp Windows 10 - 64-bit, Microsoft Corp Windows 10 - 32-bit, Microsoft Corp Windows 10 1607 - 64-bit, Microsoft Corp Windows 10 1607 - 32-bit, Red Hat, Inc. Red Hat Enterprise Linux 7, Microsoft Corp Windows Server 2016 -, Microsoft Corp Windows RT 8.1 -, Microsoft Corp Windows Server 2012 R2 (Server Core installation) -, Microsoft Corp Windows Server 2016 (Server Core installation) -, Canonical Ltd. Ubuntu 18.04 LTS, Microsoft Corp Windows 10 1809 - 64-bit, Microsoft Corp Windows 10 1809 - 32-bit, Microsoft Corp Windows Server 2019 -, Microsoft Corp Windows Server 2019 (Server Core installation) -, Microsoft Corp Windows 10 1809 - ARM64, Inc. Red Hat Enterprise Linux 8, Novell Inc. OpenSUSE Leap 15.1, Canonical Ltd. Ubuntu 14.04 ESM, Сообщество свободного программного обеспечения Debian GNU/Linux 10, Inc. Red Hat Enterprise Linux 7.6 Extended Update Support, Inc. Red Hat Enterprise Linux 7.2 Advanced Update Support, Inc. Red Hat Enterprise Linux 7.3 Advanced Update Support, Inc. Red Hat Enterprise Linux 7.3 Telco Extended Update Support, Inc. Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions, Inc. Red Hat Enterprise Linux 7.4 Telco Extended Update Support, Inc. Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions, Inc. Red Hat Enterprise Linux 7.4 Advanced Update Support, Canonical Ltd. Ubuntu 20.04 LTS, Novell Inc. OpenSUSE Leap 15.2, Inc. Red Hat Enterprise Linux 8.1 Extended Update Support, Inc. Red Hat Enterprise Linux 7.7 Extended Update Support, Erich Boleyn Grub2 до 2.04 включительно, Microsoft Corp Windows 10 20H2 - ARM64, Microsoft Corp Windows 10 20H2 - 32-bit, Microsoft Corp Windows 10 20H2 - 64-bit, Microsoft Corp Windows Server 20H2 (Server Core Installation) -, Canonical Ltd. Ubuntu 16.04 ESM, Microsoft Corp Windows 10 21H1 - 32-bit, Microsoft Corp Windows 10 21H1 - 64-bit, Microsoft Corp Windows 10 21H1 - ARM64, Inc. Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions, Microsoft Corp Windows Server 2022 -, Microsoft Corp Windows Server 2022 (Server Core installation) -, Microsoft Corp Windows 11 - 64-bit, Microsoft Corp Windows 11 - ARM64, ООО «Ред Софт» РЕД ОС 7.3 (запись в едином реестре российских программ №3751), ФССП России ОС ТД АИС ФССП России ИК6, Microsoft Corp Windows Server 2012 (Server Core installation) -

Mitigations

Использование рекомендаций: Для Grub2: https://git.savannah.gnu.org/gitweb/?p=grub.git&view=view+git+repository Для Ред ОС: http://repo.red-soft.ru/redos/7.3c/x86_64/updates/ Для Debian: https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot/ Для программных продуктов Red Hat Inc.: https://access.redhat.com/security/cve/cve-2020-15705 Для программных продуктов Novell Inc.: https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/VHOMHHK6YNMLF2MBP6E2P2NPYVKF47G6/ https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/UGKES3MGRD44EG6DD3EOHLZZXMVRVSC3/ Для Ubuntu: https://ubuntu.com/security/notices/USN-4432-1 Для Microsoft Corp.: https://msrc.microsoft.com/update-guide/en-US/vulnerability/ADV200011 Для ОС ТД АИС ФССП России: https://goslinux.fssp.gov.ru/2726972/

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:H/Au:S/C:C/I:C/A:C",
  "CVSS 3.0": "AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Microsoft Corp, Red Hat, Inc., Canonical Ltd., Novell Inc., \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, Erich Boleyn, \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb, \u0424\u0421\u0421\u041f \u0420\u043e\u0441\u0441\u0438\u0438",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "- (Windows 8.1), - (Windows Server 2012), - (Windows Server 2012 R2), - (Windows 10), - (Windows 10 1607), 7 (Red Hat Enterprise Linux), - (Windows Server 2016), - (Windows RT 8.1), - (Windows Server 2012 R2 (Server Core installation)), - (Windows Server 2016 (Server Core installation)), 18.04 LTS (Ubuntu), - (Windows 10 1809), - (Windows Server 2019), - (Windows Server 2019 (Server Core installation)), 8 (Red Hat Enterprise Linux), 15.1 (OpenSUSE Leap), 14.04 ESM (Ubuntu), 10 (Debian GNU/Linux), 7.6 Extended Update Support (Red Hat Enterprise Linux), 7.2 Advanced Update Support (Red Hat Enterprise Linux), 7.3 Advanced Update Support (Red Hat Enterprise Linux), 7.3 Telco Extended Update Support (Red Hat Enterprise Linux), 7.3 Update Services for SAP Solutions (Red Hat Enterprise Linux), 7.4 Telco Extended Update Support (Red Hat Enterprise Linux), 8.0 Update Services for SAP Solutions (Red Hat Enterprise Linux), 7.4 Advanced Update Support (Red Hat Enterprise Linux), 20.04 LTS (Ubuntu), 15.2 (OpenSUSE Leap), 8.1 Extended Update Support (Red Hat Enterprise Linux), 7.7 Extended Update Support (Red Hat Enterprise Linux), \u0434\u043e 2.04 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Grub2), - (Windows 10 20H2), - (Windows Server 20H2 (Server Core Installation)), 16.04 ESM (Ubuntu), - (Windows 10 21H1), 7.4 Update Services for SAP Solutions (Red Hat Enterprise Linux), - (Windows Server 2022), - (Windows Server 2022 (Server Core installation)), - (Windows 11), 7.3 (\u0420\u0415\u0414 \u041e\u0421), \u0418\u041a6 (\u041e\u0421 \u0422\u0414 \u0410\u0418\u0421 \u0424\u0421\u0421\u041f \u0420\u043e\u0441\u0441\u0438\u0438), - (Windows Server 2012 (Server Core installation))",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f Grub2:\nhttps://git.savannah.gnu.org/gitweb/?p=grub.git\u0026view=view+git+repository\n\n\u0414\u043b\u044f \u0420\u0435\u0434 \u041e\u0421:\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/\n\n\u0414\u043b\u044f Debian:\nhttps://www.debian.org/security/2020-GRUB-UEFI-SecureBoot/\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\nhttps://access.redhat.com/security/cve/cve-2020-15705\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Novell Inc.:\nhttps://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/VHOMHHK6YNMLF2MBP6E2P2NPYVKF47G6/\nhttps://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/UGKES3MGRD44EG6DD3EOHLZZXMVRVSC3/\n\n\u0414\u043b\u044f Ubuntu:\nhttps://ubuntu.com/security/notices/USN-4432-1\n\n\u0414\u043b\u044f Microsoft Corp.:\nhttps://msrc.microsoft.com/update-guide/en-US/vulnerability/ADV200011\n\n\u0414\u043b\u044f \u041e\u0421 \u0422\u0414 \u0410\u0418\u0421 \u0424\u0421\u0421\u041f \u0420\u043e\u0441\u0441\u0438\u0438: \nhttps://goslinux.fssp.gov.ru/2726972/",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "29.07.2020",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "28.09.2022",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "23.09.2022",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2022-05895",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2020-15705",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Windows 8.1, Windows Server 2012, Windows Server 2012 R2, Windows 10, Windows 10 1607, Red Hat Enterprise Linux, Windows Server 2016, Windows RT 8.1, Windows Server 2012 R2 (Server Core installation), Windows Server 2016 (Server Core installation), Ubuntu, Windows 10 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), OpenSUSE Leap, Debian GNU/Linux, Grub2, Windows 10 20H2, Windows Server 20H2 (Server Core Installation), Windows 10 21H1, Windows Server 2022, Windows Server 2022 (Server Core installation), Windows 11, \u0420\u0415\u0414 \u041e\u0421 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), \u041e\u0421 \u0422\u0414 \u0410\u0418\u0421 \u0424\u0421\u0421\u041f \u0420\u043e\u0441\u0441\u0438\u0438, Windows Server 2012 (Server Core installation)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Microsoft Corp Windows 8.1 - 64-bit, Microsoft Corp Windows 8.1 - 32-bit, Microsoft Corp Windows Server 2012 - , Microsoft Corp Windows Server 2012 R2 - , Microsoft Corp Windows 10 - 64-bit, Microsoft Corp Windows 10 - 32-bit, Microsoft Corp Windows 10 1607 - 64-bit, Microsoft Corp Windows 10 1607 - 32-bit, Red Hat, Inc. Red Hat Enterprise Linux 7 , Microsoft Corp Windows Server 2016 - , Microsoft Corp Windows RT 8.1 - , Microsoft Corp Windows Server 2012 R2 (Server Core installation) - , Microsoft Corp Windows Server 2016 (Server Core installation) - , Canonical Ltd. Ubuntu 18.04 LTS , Microsoft Corp Windows 10 1809 - 64-bit, Microsoft Corp Windows 10 1809 - 32-bit, Microsoft Corp Windows Server 2019 - , Microsoft Corp Windows Server 2019 (Server Core installation) - , Microsoft Corp Windows 10 1809 - ARM64, Red Hat, Inc. Red Hat Enterprise Linux 8 , Novell Inc. OpenSUSE Leap 15.1 , Canonical Ltd. Ubuntu 14.04 ESM , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 10 , Red Hat, Inc. Red Hat Enterprise Linux 7.6 Extended Update Support , Red Hat, Inc. Red Hat Enterprise Linux 7.2 Advanced Update Support , Red Hat, Inc. Red Hat Enterprise Linux 7.3 Advanced Update Support , Red Hat, Inc. Red Hat Enterprise Linux 7.3 Telco Extended Update Support , Red Hat, Inc. Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions , Red Hat, Inc. Red Hat Enterprise Linux 7.4 Telco Extended Update Support , Red Hat, Inc. Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions , Red Hat, Inc. Red Hat Enterprise Linux 7.4 Advanced Update Support , Canonical Ltd. Ubuntu 20.04 LTS , Novell Inc. OpenSUSE Leap 15.2 , Red Hat, Inc. Red Hat Enterprise Linux 8.1 Extended Update Support , Red Hat, Inc. Red Hat Enterprise Linux 7.7 Extended Update Support , Erich Boleyn Grub2 \u0434\u043e 2.04 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , Microsoft Corp Windows 10 20H2 - ARM64, Microsoft Corp Windows 10 20H2 - 32-bit, Microsoft Corp Windows 10 20H2 - 64-bit, Microsoft Corp Windows Server 20H2 (Server Core Installation) - , Canonical Ltd. Ubuntu 16.04 ESM , Microsoft Corp Windows 10 21H1 - 32-bit, Microsoft Corp Windows 10 21H1 - 64-bit, Microsoft Corp Windows 10 21H1 - ARM64, Red Hat, Inc. Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions , Microsoft Corp Windows Server 2022 - , Microsoft Corp Windows Server 2022 (Server Core installation) - , Microsoft Corp Windows 11 - 64-bit, Microsoft Corp Windows 11 - ARM64, \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 7.3  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), \u0424\u0421\u0421\u041f \u0420\u043e\u0441\u0441\u0438\u0438 \u041e\u0421 \u0422\u0414 \u0410\u0418\u0421 \u0424\u0421\u0421\u041f \u0420\u043e\u0441\u0441\u0438\u0438 \u0418\u041a6 , Microsoft Corp Windows Server 2012 (Server Core installation) - ",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 Secure Boot \u0437\u0430\u0433\u0440\u0443\u0437\u0447\u0438\u043a\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c Grub2, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434 \u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u043e\u043b\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u043d\u0430\u0434 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u043e\u043c",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043f\u043e\u0434\u043f\u0438\u0441\u0438 (CWE-347), \u041d\u0430\u0440\u0443\u0448\u0435\u043d\u0438\u0435 \u043e\u0436\u0438\u0434\u0430\u0435\u043c\u043e\u0433\u043e \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f (CWE-440)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 Secure Boot \u0437\u0430\u0433\u0440\u0443\u0437\u0447\u0438\u043a\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c Grub2 \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043f\u043e\u0434\u043f\u0438\u0441\u0438. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434 \u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u043e\u043b\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u043d\u0430\u0434 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u043e\u043c",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041f\u043e\u0434\u043c\u0435\u043d\u0430 \u043f\u0440\u0438 \u0432\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0438, \u0417\u043b\u043e\u0443\u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u043e\u043c",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://redos.red-soft.ru/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-grub-/?sphrase_id=63279\nhttps://git.savannah.gnu.org/gitweb/?p=grub.git\u0026view=view+git+repository\nhttps://access.redhat.com/security/cve/cve-2020-15705\nhttps://www.debian.org/security/2020-GRUB-UEFI-SecureBoot/\nhttps://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/VHOMHHK6YNMLF2MBP6E2P2NPYVKF47G6/\nhttps://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/UGKES3MGRD44EG6DD3EOHLZZXMVRVSC3/\nhttps://ubuntu.com/security/notices/USN-4432-1\nhttp://www.openwall.com/lists/oss-security/2020/07/29/3 \nhttp://www.openwall.com/lists/oss-security/2021/03/02/3 \nhttp://www.openwall.com/lists/oss-security/2021/09/17/2 \nhttp://www.openwall.com/lists/oss-security/2021/09/17/4 \nhttp://www.openwall.com/lists/oss-security/2021/09/21/1\nhttps://msrc.microsoft.com/update-guide/en-US/vulnerability/ADV200011\nhttps://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass\nhttps://security.gentoo.org/glsa/202104-05\nhttps://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-15705\nhttps://goslinux.fssp.gov.ru/2726972/",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-347, CWE-440",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 6)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 6,4)"
}

CVE-2020-15705 (GCVE-0-2020-15705)

Vulnerability from cvelistv5 – Published: 2020-07-29 17:45 – Updated: 2024-09-17 00:06

Title

GRUB2: avoid loading unsigned kernels when GRUB is booted directly under secureboot without shim

Summary

GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions.

Severity

6.4 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

canonical mitre root

References

20 references

URL	Tags
https://www.eclypsium.com/2020/07/29/theres-a-hol…	x_refsource_CONFIRM
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBas…	vendor-advisoryx_refsource_UBUNTU
http://ubuntu.com/security/notices/USN-4432-1	vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2020-GRUB-UEFI-Se…	vendor-advisoryx_refsource_DEBIAN
https://portal.msrc.microsoft.com/en-US/security-…	x_refsource_CONFIRM
https://access.redhat.com/security/vulnerabilitie…	vendor-advisoryx_refsource_REDHAT
https://www.suse.com/c/suse-addresses-grub2-secur…	vendor-advisoryx_refsource_SUSE
https://www.suse.com/support/kb/doc/?id=000019673	vendor-advisoryx_refsource_SUSE
https://www.openwall.com/lists/oss-security/2020/…	x_refsource_CONFIRM
https://lists.gnu.org/archive/html/grub-devel/202…	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2020/07/29/3	mailing-listx_refsource_MLIST
https://security.netapp.com/advisory/ntap-2020073…	x_refsource_CONFIRM
https://usn.ubuntu.com/4432-1/	vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://www.openwall.com/lists/oss-security/2021/03/02/3	mailing-listx_refsource_MLIST
https://security.gentoo.org/glsa/202104-05	vendor-advisoryx_refsource_GENTOO
http://www.openwall.com/lists/oss-security/2021/09/17/2	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/09/17/4	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/09/21/1	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
Ubuntu	grub2 in Ubuntu	Affected: 20.04 LTS , < 2.04-1ubuntu26.1 (custom) Affected: 18.04 LTS , < 2.02-2ubuntu8.16 (custom) Affected: 16.04 LTS , < 2.02~beta2-36ubuntu3.26 (custom) Affected: 14.04 ESM , < 2.02~beta2-9ubuntu1.20 (custom)

Date Public

2020-07-29 00:00

Credits

Mathieu Trudel-Lapierre

Show details on NVD website

JSON

To clipboard

{
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          "dateUpdated": "2024-08-04T13:22:30.823Z",
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            "tags": [
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            "tags": [
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          }
        ],
        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
        {
          "product": "grub2 in Ubuntu",
          "vendor": "Ubuntu",
          "versions": [
            {
              "lessThan": "2.04-1ubuntu26.1",
              "status": "affected",
              "version": "20.04 LTS",
              "versionType": "custom"
            },
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              "status": "affected",
              "version": "18.04 LTS",
              "versionType": "custom"
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              "status": "affected",
              "version": "16.04 LTS",
              "versionType": "custom"
            },
            {
              "lessThan": "2.02~beta2-9ubuntu1.20",
              "status": "affected",
              "version": "14.04 ESM",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Mathieu Trudel-Lapierre"
        }
      ],
      "datePublic": "2020-07-29T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

BDU:2022-05895 (CVE-2020-15705)

CVE-2020-15705 (GCVE-0-2020-15705)

Tags

Sightings

Nomenclature

Related by attack behaviour