GSD-2020-24863

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 through 2020-08-19, and FreeBSD through 11.4, that allows an attacker to trigger an invalid free and crash the system via a crafted size value in conjunction with an invalid mode.
Aliases
Aliases
CVE-2020-24863
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{
  "GSD": {
    "alias": "CVE-2020-24863",
    "description": "A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 through 2020-08-19, and FreeBSD through 11.4, that allows an attacker to trigger an invalid free and crash the system via a crafted size value in conjunction with an invalid mode.",
    "id": "GSD-2020-24863"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-24863"
      ],
      "details": "A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 through 2020-08-19, and FreeBSD through 11.4, that allows an attacker to trigger an invalid free and crash the system via a crafted size value in conjunction with an invalid mode.",
      "id": "GSD-2020-24863",
      "modified": "2023-12-13T01:22:12.063675Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2020-24863",
        "STATE": "PUBLIC"
      },
      "affects": {
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            {
              "product": {
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                  {
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                    "version": {
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                          "version_value": "n/a"
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          }
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      "references": {
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          {
            "name": "https://www.midnightbsd.org/notes/",
            "refsource": "MISC",
            "url": "https://www.midnightbsd.org/notes/"
          },
          {
            "name": "https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c",
            "refsource": "MISC",
            "url": "https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c"
          },
          {
            "name": "http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txt",
            "refsource": "CONFIRM",
            "url": "http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txt"
          },
          {
            "name": "https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.asc",
            "refsource": "CONFIRM",
            "url": "https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.asc"
          }
        ]
      }
    },
    "nvd.nist.gov": {
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        "nodes": [
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                "cpe_name": [],
                "versionEndExcluding": "1.2.7",
                "vulnerable": true
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              {
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                "versionEndIncluding": "2020-08-19",
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        "description": {
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              "value": "A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 through 2020-08-19, and FreeBSD through 11.4, that allows an attacker to trigger an invalid free and crash the system via a crafted size value in conjunction with an invalid mode."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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                {
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                  "value": "CWE-787"
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        "references": {
          "reference_data": [
            {
              "name": "https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c"
            },
            {
              "name": "https://www.midnightbsd.org/notes/",
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              "tags": [
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              "tags": [
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              "url": "http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txt"
            },
            {
              "name": "https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.asc",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.asc"
            }
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        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 4.9,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 6.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2020-09-11T14:03Z",
      "publishedDate": "2020-09-03T15:15Z"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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