gsd-2018-1093
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.
Aliases
Aliases
CVE-2018-1093


To clipboard 

{
  "GSD": {
    "alias": "CVE-2018-1093",
    "description": "The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.",
    "id": "GSD-2018-1093",
    "references": [
      "https://www.suse.com/security/cve/CVE-2018-1093.html",
      "https://www.debian.org/security/2018/dsa-4188",
      "https://ubuntu.com/security/CVE-2018-1093",
      "https://advisories.mageia.org/CVE-2018-1093.html",
      "https://linux.oracle.com/cve/CVE-2018-1093.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2018-1093"
      ],
      "details": "The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.",
      "id": "GSD-2018-1093",
      "modified": "2023-12-13T01:22:37.419479Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2018-1093",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux kernel through version 4.15",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "Linux kernel through version 4.15"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "data_format": "MITRE",
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "out-of-bounds read"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://usn.ubuntu.com/3754-1/",
            "refsource": "MISC",
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            "url": "https://usn.ubuntu.com/3752-3/"
          },
          {
            "name": "http://openwall.com/lists/oss-security/2018/03/29/1",
            "refsource": "MISC",
            "url": "http://openwall.com/lists/oss-security/2018/03/29/1"
          },
          {
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          },
          {
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            "refsource": "MISC",
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=7dac4a1726a9c64a517d595c40e95e2d0d135f6f"
          },
          {
            "name": "https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html",
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          },
          {
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          },
          {
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          },
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          },
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            "name": "https://usn.ubuntu.com/3676-2/",
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          },
          {
            "name": "https://www.debian.org/security/2018/dsa-4188",
            "refsource": "MISC",
            "url": "https://www.debian.org/security/2018/dsa-4188"
          },
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1560782",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1560782"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "4.15.15",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2018-1093"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-125"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=7dac4a1726a9c64a517d595c40e95e2d0d135f6f",
              "refsource": "MISC",
              "tags": [
                "Patch"
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              "url": "https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=7dac4a1726a9c64a517d595c40e95e2d0d135f6f"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1560782",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Third Party Advisory"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1560782"
            },
            {
              "name": "https://bugzilla.kernel.org/show_bug.cgi?id=199181",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking"
              ],
              "url": "https://bugzilla.kernel.org/show_bug.cgi?id=199181"
            },
            {
              "name": "http://openwall.com/lists/oss-security/2018/03/29/1",
              "refsource": "MISC",
              "tags": [
                "Mailing List"
              ],
              "url": "http://openwall.com/lists/oss-security/2018/03/29/1"
            },
            {
              "name": "DSA-4188",
              "refsource": "DEBIAN",
              "tags": [],
              "url": "https://www.debian.org/security/2018/dsa-4188"
            },
            {
              "name": "[debian-lts-announce] 20180601 [SECURITY] [DLA 1392-1] linux security update",
              "refsource": "MLIST",
              "tags": [],
              "url": "https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html"
            },
            {
              "name": "USN-3676-2",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "https://usn.ubuntu.com/3676-2/"
            },
            {
              "name": "USN-3676-1",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "https://usn.ubuntu.com/3676-1/"
            },
            {
              "name": "[debian-lts-announce] 20180715 [SECURITY] [DLA 1422-2] linux security update",
              "refsource": "MLIST",
              "tags": [],
              "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html"
            },
            {
              "name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1422-1] linux security update",
              "refsource": "MLIST",
              "tags": [],
              "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html"
            },
            {
              "name": "USN-3754-1",
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              "tags": [],
              "url": "https://usn.ubuntu.com/3754-1/"
            },
            {
              "name": "USN-3752-2",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "https://usn.ubuntu.com/3752-2/"
            },
            {
              "name": "USN-3752-1",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "https://usn.ubuntu.com/3752-1/"
            },
            {
              "name": "USN-3752-3",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "https://usn.ubuntu.com/3752-3/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.1,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 6.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2018-08-29T10:29Z",
      "publishedDate": "2018-04-02T03:29Z"
    }
  }
}


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