CVE-2020-15707 (GCVE-0-2020-15707)
Vulnerability from cvelistv5
Published
2020-07-29 17:45
Modified
2024-09-17 03:07
Severity ?
5.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
CWE
  • CWE-362 - Race Condition (Concurrent Execution using Shared Resource with Improper Synchronization)
Summary
Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.
References
security@ubuntu.com http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List, Third Party Advisory
security@ubuntu.com http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.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 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.debian.org/security/2020/dsa-4735 Third Party Advisory
security@ubuntu.com https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ Exploit, 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/msg00016.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.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 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.debian.org/security/2020/dsa-4735 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ Exploit, 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-2020-15707",
    "datePublished": "2020-07-29T17:45:34.577890Z",
    "dateReserved": "2020-07-14T00:00:00",
    "dateUpdated": "2024-09-17T03:07:49.301Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-15707\",\"sourceIdentifier\":\"security@ubuntu.com\",\"published\":\"2020-07-29T18:15:14.640\",\"lastModified\":\"2024-11-21T05:06:04.027\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.\"},{\"lang\":\"es\",\"value\":\"Se detectaron desbordamientos de enteros en las funciones grub_cmd_initrd y grub_initrd_init en el componente efilinux de GRUB2, como se incluye en Debian, Red Hat y Ubuntu (la funcionalidad no est\u00e1 incluida aguas arriba de GRUB2), conllevando a un desbordamiento del b\u00fafer en la regi\u00f3n heap de la memoria. Estos podr\u00edan ser activados por una gran cantidad de argumentos para el comando initrd en arquitecturas de 32 bits, o un sistema de archivos dise\u00f1ado con archivos muy grandes en cualquier arquitectura. Un atacante podr\u00eda usar esto para ejecutar c\u00f3digo arbitrario y omitir las restricciones UEFI Secure Boot. 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  }
}


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