gsd-2012-2100
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value). NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307.
Aliases
Aliases
CVE-2012-2100


To clipboard 

{
  "GSD": {
    "alias": "CVE-2012-2100",
    "description": "The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).  NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307.",
    "id": "GSD-2012-2100",
    "references": [
      "https://www.suse.com/security/cve/CVE-2012-2100.html",
      "https://access.redhat.com/errata/RHSA-2012:1580",
      "https://access.redhat.com/errata/RHSA-2012:1445",
      "https://alas.aws.amazon.com/cve/html/CVE-2012-2100.html",
      "https://linux.oracle.com/cve/CVE-2012-2100.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2012-2100"
      ],
      "details": "The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value). NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307.",
      "id": "GSD-2012-2100",
      "modified": "2023-12-13T01:20:16.818267Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2012-2100",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "n/a"
                        }
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              "vendor_name": "n/a"
            }
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            "value": "The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value). NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307."
          }
        ]
      },
      "problemtype": {
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                "value": "n/a"
              }
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      },
      "references": {
        "reference_data": [
          {
            "name": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2",
            "refsource": "MISC",
            "url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2"
          },
          {
            "name": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d50f2ab6f050311dbf7b8f5501b25f0bf64a439b",
            "refsource": "MISC",
            "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d50f2ab6f050311dbf7b8f5501b25f0bf64a439b"
          },
          {
            "name": "http://rhn.redhat.com/errata/RHSA-2012-1445.html",
            "refsource": "MISC",
            "url": "http://rhn.redhat.com/errata/RHSA-2012-1445.html"
          },
          {
            "name": "http://rhn.redhat.com/errata/RHSA-2012-1580.html",
            "refsource": "MISC",
            "url": "http://rhn.redhat.com/errata/RHSA-2012-1580.html"
          },
          {
            "name": "http://www.openwall.com/lists/oss-security/2012/04/12/11",
            "refsource": "MISC",
            "url": "http://www.openwall.com/lists/oss-security/2012/04/12/11"
          },
          {
            "name": "http://www.securityfocus.com/bid/53414",
            "refsource": "MISC",
            "url": "http://www.securityfocus.com/bid/53414"
          },
          {
            "name": "https://github.com/torvalds/linux/commit/d50f2ab6f050311dbf7b8f5501b25f0bf64a439b",
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            "url": "https://github.com/torvalds/linux/commit/d50f2ab6f050311dbf7b8f5501b25f0bf64a439b"
          },
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=809687",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=809687"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:x86:*",
                "cpe_name": [],
                "versionEndIncluding": "3.2.1",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:3.2:*:*:*:*:*:x86:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2012-2100"
        },
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        "data_version": "4.0",
        "description": {
          "description_data": [
            {
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              "value": "The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value). NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-189"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "[oss-security] 20120412 Re: fix to CVE-2009-4307",
              "refsource": "MLIST",
              "tags": [],
              "url": "http://www.openwall.com/lists/oss-security/2012/04/12/11"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=809687",
              "refsource": "CONFIRM",
              "tags": [],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=809687"
            },
            {
              "name": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2",
              "refsource": "CONFIRM",
              "tags": [],
              "url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2"
            },
            {
              "name": "https://github.com/torvalds/linux/commit/d50f2ab6f050311dbf7b8f5501b25f0bf64a439b",
              "refsource": "CONFIRM",
              "tags": [],
              "url": "https://github.com/torvalds/linux/commit/d50f2ab6f050311dbf7b8f5501b25f0bf64a439b"
            },
            {
              "name": "53414",
              "refsource": "BID",
              "tags": [],
              "url": "http://www.securityfocus.com/bid/53414"
            },
            {
              "name": "RHSA-2012:1445",
              "refsource": "REDHAT",
              "tags": [],
              "url": "http://rhn.redhat.com/errata/RHSA-2012-1445.html"
            },
            {
              "name": "RHSA-2012:1580",
              "refsource": "REDHAT",
              "tags": [],
              "url": "http://rhn.redhat.com/errata/RHSA-2012-1580.html"
            },
            {
              "name": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d50f2ab6f050311dbf7b8f5501b25f0bf64a439b",
              "refsource": "MISC",
              "tags": [],
              "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d50f2ab6f050311dbf7b8f5501b25f0bf64a439b"
            }
          ]
        }
      },
      "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
        }
      },
      "lastModifiedDate": "2023-02-13T04:33Z",
      "publishedDate": "2012-07-03T16:40Z"
    }
  }
}


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