CVE-2020-15705 (GCVE-0-2020-15705)
Vulnerability from cvelistv5
Published
2020-07-29 17:45
Modified
2024-09-17 00:06
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
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.
References
security@ubuntu.com http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00067.html Mailing List, Third Party Advisory
security@ubuntu.com http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00069.html Mailing List, Third Party Advisory
security@ubuntu.com http://ubuntu.com/security/notices/USN-4432-1 Third Party Advisory
security@ubuntu.com http://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List, Third Party Advisory
security@ubuntu.com http://www.openwall.com/lists/oss-security/2021/03/02/3 Mailing List, Third Party Advisory
security@ubuntu.com http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory
security@ubuntu.com http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory
security@ubuntu.com http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory
security@ubuntu.com https://access.redhat.com/security/vulnerabilities/grub2bootloader Third Party Advisory
security@ubuntu.com https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html Issue Tracking, Vendor Advisory
security@ubuntu.com https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 Patch, Third Party Advisory, Vendor Advisory
security@ubuntu.com https://security.gentoo.org/glsa/202104-05 Third Party Advisory
security@ubuntu.com https://security.netapp.com/advisory/ntap-20200731-0008/ Third Party Advisory
security@ubuntu.com https://usn.ubuntu.com/4432-1/ Third Party Advisory
security@ubuntu.com https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass Third Party Advisory
security@ubuntu.com https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot Third Party Advisory
security@ubuntu.com https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ Third Party Advisory
security@ubuntu.com https://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List, Third Party Advisory
security@ubuntu.com https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ Third Party Advisory
security@ubuntu.com https://www.suse.com/support/kb/doc/?id=000019673 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00067.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00069.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://ubuntu.com/security/notices/USN-4432-1 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2021/03/02/3 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/security/vulnerabilities/grub2bootloader Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 Patch, Third Party Advisory, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.gentoo.org/glsa/202104-05 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.netapp.com/advisory/ntap-20200731-0008/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/4432-1/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.suse.com/support/kb/doc/?id=000019673 Third Party Advisory
Impacted products
Vendor Product Version
Ubuntu grub2 in Ubuntu Version: 20.04 LTS   < 2.04-1ubuntu26.1
Version: 18.04 LTS   < 2.02-2ubuntu8.16
Version: 16.04 LTS   < 2.02~beta2-36ubuntu3.26
Version: 14.04 ESM   < 2.02~beta2-9ubuntu1.20
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    "assignerShortName": "canonical",
    "cveId": "CVE-2020-15705",
    "datePublished": "2020-07-29T17:45:33.422001Z",
    "dateReserved": "2020-07-14T00:00:00",
    "dateUpdated": "2024-09-17T00:06:01.169Z",
    "state": "PUBLISHED"
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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