gsd-2020-14311
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
Aliases
Aliases
CVE-2020-14311


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-14311",
    "description": "There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.",
    "id": "GSD-2020-14311",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-14311.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-2020:3273",
      "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-2020-14311",
      "https://advisories.mageia.org/CVE-2020-14311.html",
      "https://linux.oracle.com/cve/CVE-2020-14311.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-14311"
      ],
      "details": "There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.",
      "id": "GSD-2020-14311",
      "modified": "2023-12-13T01:22:00.040883Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "grub2",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "2.06"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "The Grub2 Project"
            }
          ]
        }
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          }
        ]
      },
      "impact": {
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            {
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            }
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      },
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          },
          {
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          {
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        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
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                "cpe_name": [],
                "versionEndExcluding": "2.06",
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            "operator": "OR"
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          {
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      "cve": {
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          "ID": "CVE-2020-14311"
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              "tags": [
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                "Third Party Advisory"
              ],
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            },
            {
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 3.6,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 0.8,
          "impactScore": 5.2
        }
      },
      "lastModifiedDate": "2021-10-19T13:23Z",
      "publishedDate": "2020-07-31T22:15Z"
    }
  }
}


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