gsd-2020-15707
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
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.
Aliases
Aliases
CVE-2020-15707


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-15707",
    "description": "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.",
    "id": "GSD-2020-15707",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-15707.html",
      "https://www.debian.org/security/2020/dsa-4735",
      "https://access.redhat.com/errata/RHSA-2020:3276",
      "https://access.redhat.com/errata/RHSA-2020:3275",
      "https://access.redhat.com/errata/RHSA-2020:3274",
      "https://access.redhat.com/errata/RHSA-2020:3271",
      "https://access.redhat.com/errata/RHSA-2020:3227",
      "https://access.redhat.com/errata/RHSA-2020:3223",
      "https://access.redhat.com/errata/RHSA-2020:3217",
      "https://access.redhat.com/errata/RHSA-2020:3216",
      "https://ubuntu.com/security/CVE-2020-15707",
      "https://advisories.mageia.org/CVE-2020-15707.html",
      "https://linux.oracle.com/cve/CVE-2020-15707.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-15707"
      ],
      "details": "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.",
      "id": "GSD-2020-15707",
      "modified": "2023-12-13T01:21:43.334595Z",
      "schema_version": "1.4.0"
    }
  },
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            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 0.5,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-09-13T14:25Z",
      "publishedDate": "2020-07-29T18:15Z"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.