Vulnerability-Lookup

CNVD-2020-38783

Vulnerability from cnvd - Published: 2020-07-14

Title

FreeBSD拒绝服务漏洞（CNVD-2020-38783）

Description

FreeBSD是由Core Team团队负责的FreeBSD项目中的一套类Unix自由操作系统，是经过BSD、386BSD和4.4BSD发展而来的类Unix的一个重要分支。 FreeBSD中存在安全漏洞，该漏洞源于ELF包头解析器没有充分地执行验证。攻击者可借助恶意的ELF二进制文件利用该漏洞造成内核崩溃或泄露内核内存。

Severity

中

Patch Name

FreeBSD拒绝服务漏洞（CNVD-2020-38783）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://security.freebsd.org/advisories/FreeBSD-SA-18:12.elf.asc

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-6924

Impacted products

Name
['FreeBSD FreeBSD <11.1-STABLE', 'FreeBSD FreeBSD <10.4-STABLE', 'Freebsd Freebsd <11.2-RELEASE-p3', 'Freebsd Freebsd <11.1-RELEASE-p14', 'Freebsd Freebsd <10.4-RELEASE-p12']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-6924"
    }
  },
  "description": "FreeBSD\u662f\u7531Core Team\u56e2\u961f\u8d1f\u8d23\u7684FreeBSD\u9879\u76ee\u4e2d\u7684\u4e00\u5957\u7c7bUnix\u81ea\u7531\u64cd\u4f5c\u7cfb\u7edf\uff0c\u662f\u7ecf\u8fc7BSD\u3001386BSD\u548c4.4BSD\u53d1\u5c55\u800c\u6765\u7684\u7c7bUnix\u7684\u4e00\u4e2a\u91cd\u8981\u5206\u652f\u3002\n\nFreeBSD\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eELF\u5305\u5934\u89e3\u6790\u5668\u6ca1\u6709\u5145\u5206\u5730\u6267\u884c\u9a8c\u8bc1\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u6076\u610f\u7684ELF\u4e8c\u8fdb\u5236\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u5185\u6838\u5d29\u6e83\u6216\u6cc4\u9732\u5185\u6838\u5185\u5b58\u3002",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-38783",
  "openTime": "2020-07-14",
  "patchDescription": "FreeBSD\u662f\u7531Core Team\u56e2\u961f\u8d1f\u8d23\u7684FreeBSD\u9879\u76ee\u4e2d\u7684\u4e00\u5957\u7c7bUnix\u81ea\u7531\u64cd\u4f5c\u7cfb\u7edf\uff0c\u662f\u7ecf\u8fc7BSD\u3001386BSD\u548c4.4BSD\u53d1\u5c55\u800c\u6765\u7684\u7c7bUnix\u7684\u4e00\u4e2a\u91cd\u8981\u5206\u652f\u3002\r\n\r\nFreeBSD\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eELF\u5305\u5934\u89e3\u6790\u5668\u6ca1\u6709\u5145\u5206\u5730\u6267\u884c\u9a8c\u8bc1\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u6076\u610f\u7684ELF\u4e8c\u8fdb\u5236\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u5185\u6838\u5d29\u6e83\u6216\u6cc4\u9732\u5185\u6838\u5185\u5b58\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "FreeBSD\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-38783\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "FreeBSD FreeBSD \u003c11.1-STABLE",
      "FreeBSD FreeBSD \u003c10.4-STABLE",
      "Freebsd Freebsd \u003c11.2-RELEASE-p3",
      "Freebsd Freebsd \u003c11.1-RELEASE-p14",
      "Freebsd Freebsd \u003c10.4-RELEASE-p12"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-6924",
  "serverity": "\u4e2d",
  "submitTime": "2018-09-16",
  "title": "FreeBSD\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-38783\uff09"
}

CVE-2018-6924 (GCVE-0-2018-6924)

Vulnerability from cvelistv5 – Published: 2018-09-12 15:00 – Updated: 2024-09-16 19:30

Summary

In FreeBSD before 11.1-STABLE, 11.2-RELEASE-p3, 11.1-RELEASE-p14, 10.4-STABLE, and 10.4-RELEASE-p12, insufficient validation in the ELF header parser could allow a malicious ELF binary to cause a kernel crash or disclose kernel memory.

Severity

No CVSS data available.

CWE

Kernel memory disclosure

Assigner

freebsd CNA under the mitre root

CNA scorecard D 60/100 over 61 records in the last 180 days details

References

2 references

URL	Tags
http://www.securitytracker.com/id/1041646	vdb-entryx_refsource_SECTRACK
https://security.freebsd.org/advisories/FreeBSD-S…	vendor-advisoryx_refsource_FREEBSD

Impacted products

1 product

Vendor	Product	Version
FreeBSD	FreeBSD	Affected: before 11.1-STABLE, 11.2-RELEASE-p3, 11.1-RELEASE-p14, 10.4-STABLE, and 10.4-RELEASE-p12

Date Public

2018-09-12 00:00

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T06:17:17.356Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "1041646",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1041646"
          },
          {
            "name": "FreeBSD-SA-18:12",
            "tags": [
              "vendor-advisory",
              "x_refsource_FREEBSD",
              "x_transferred"
            ],
            "url": "https://security.freebsd.org/advisories/FreeBSD-SA-18:12.elf.asc"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "FreeBSD",
          "vendor": "FreeBSD",
          "versions": [
            {
              "status": "affected",
              "version": "before 11.1-STABLE, 11.2-RELEASE-p3, 11.1-RELEASE-p14, 10.4-STABLE, and 10.4-RELEASE-p12"
            }
          ]
        }
      ],
      "datePublic": "2018-09-12T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "In FreeBSD before 11.1-STABLE, 11.2-RELEASE-p3, 11.1-RELEASE-p14, 10.4-STABLE, and 10.4-RELEASE-p12, insufficient validation in the ELF header parser could allow a malicious ELF binary to cause a kernel crash or disclose kernel memory."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Kernel memory disclosure",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-09-13T09:57:01.000Z",
        "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "shortName": "freebsd"
      },
      "references": [
        {
          "name": "1041646",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1041646"
        },
        {
          "name": "FreeBSD-SA-18:12",
          "tags": [
            "vendor-advisory",
            "x_refsource_FREEBSD"
          ],
          "url": "https://security.freebsd.org/advisories/FreeBSD-SA-18:12.elf.asc"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secteam@freebsd.org",
          "DATE_PUBLIC": "2018-09-12T00:00:00",
          "ID": "CVE-2018-6924",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "FreeBSD",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "before 11.1-STABLE, 11.2-RELEASE-p3, 11.1-RELEASE-p14, 10.4-STABLE, and 10.4-RELEASE-p12"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "FreeBSD"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
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              "lang": "eng",
              "value": "In FreeBSD before 11.1-STABLE, 11.2-RELEASE-p3, 11.1-RELEASE-p14, 10.4-STABLE, and 10.4-RELEASE-p12, insufficient validation in the ELF header parser could allow a malicious ELF binary to cause a kernel crash or disclose kernel memory."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Kernel memory disclosure"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "1041646",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1041646"
            },
            {
              "name": "FreeBSD-SA-18:12",
              "refsource": "FREEBSD",
              "url": "https://security.freebsd.org/advisories/FreeBSD-SA-18:12.elf.asc"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
    "assignerShortName": "freebsd",
    "cveId": "CVE-2018-6924",
    "datePublished": "2018-09-12T15:00:00.000Z",
    "dateReserved": "2018-02-12T00:00:00.000Z",
    "dateUpdated": "2024-09-16T19:30:37.231Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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