Vulnerability-Lookup

CNVD-2018-20786

Vulnerability from cnvd - Published: 2018-10-12

Title

FreeBSD空指针引用漏洞（CNVD-2018-20786）

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，该漏洞源于在‘freebsd4_getfsstat’函数系统调用中程序未能正确的检测内存，本地攻击者可利用该漏洞造成拒绝服务（空指针逆向引用）。

Severity

低

Patch Name

FreeBSD空指针引用漏洞（CNVD-2018-20786）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://www.freebsd.org/security/advisories/FreeBSD-EN-18:10.syscall.asc

Reference

https://www.freebsd.org/security/advisories/FreeBSD-EN-18:10.syscall.asc

Impacted products

Name
FreeBSD FreeBSD

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-17154",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17154"
    }
  },
  "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\r\n\r\nFreeBSD\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u2018freebsd4_getfsstat\u2019\u51fd\u6570\u7cfb\u7edf\u8c03\u7528\u4e2d\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u68c0\u6d4b\u5185\u5b58\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\u3002",
  "discovererName": "Thomas Barabosch, Fraunhofer FKIE",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.freebsd.org/security/advisories/FreeBSD-EN-18:10.syscall.asc",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-20786",
  "openTime": "2018-10-12",
  "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\u4e8e\u5728\u2018freebsd4_getfsstat\u2019\u51fd\u6570\u7cfb\u7edf\u8c03\u7528\u4e2d\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u68c0\u6d4b\u5185\u5b58\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\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\u7a7a\u6307\u9488\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2018-20786\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "FreeBSD FreeBSD"
  },
  "referenceLink": "https://www.freebsd.org/security/advisories/FreeBSD-EN-18:10.syscall.asc",
  "serverity": "\u4f4e",
  "submitTime": "2018-10-09",
  "title": "FreeBSD\u7a7a\u6307\u9488\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2018-20786\uff09"
}

CVE-2018-17154 (GCVE-0-2018-17154)

Vulnerability from cvelistv5 – Published: 2018-09-28 13:00 – Updated: 2024-09-16 19:31

Summary

In FreeBSD before 11.2-STABLE(r338987), 11.2-RELEASE-p4, and 11.1-RELEASE-p15, due to insufficient memory checking in the freebsd4_getfsstat system call, a NULL pointer dereference can occur. Unprivileged authenticated local users may be able to cause a denial of service.

Severity

No CVSS data available.

CWE

Denial of service

Assigner

freebsd

References

1 reference

URL	Tags
https://security.FreeBSD.org/advisories/FreeBSD-E…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
FreeBSD	FreeBSD	Affected: 11.2 before 11.2-RELEASE-p4 Affected: 11.1 before 11.1-RELEASE-p15

Date Public

2018-09-27 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T10:39:59.675Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.FreeBSD.org/advisories/FreeBSD-EN-18:10.syscall.asc"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "FreeBSD",
          "vendor": "FreeBSD",
          "versions": [
            {
              "status": "affected",
              "version": "11.2 before 11.2-RELEASE-p4"
            },
            {
              "status": "affected",
              "version": "11.1 before 11.1-RELEASE-p15"
            }
          ]
        }
      ],
      "datePublic": "2018-09-27T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "In FreeBSD before 11.2-STABLE(r338987), 11.2-RELEASE-p4, and 11.1-RELEASE-p15, due to insufficient memory checking in the freebsd4_getfsstat system call, a NULL pointer dereference can occur. Unprivileged authenticated local users may be able to cause a denial of service."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Denial of service",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-09-28T12:57:01.000Z",
        "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "shortName": "freebsd"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.FreeBSD.org/advisories/FreeBSD-EN-18:10.syscall.asc"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secteam@freebsd.org",
          "DATE_PUBLIC": "2018-09-27T00:00:00",
          "ID": "CVE-2018-17154",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "FreeBSD",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "11.2 before 11.2-RELEASE-p4"
                          },
                          {
                            "version_value": "11.1 before 11.1-RELEASE-p15"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "FreeBSD"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "In FreeBSD before 11.2-STABLE(r338987), 11.2-RELEASE-p4, and 11.1-RELEASE-p15, due to insufficient memory checking in the freebsd4_getfsstat system call, a NULL pointer dereference can occur. Unprivileged authenticated local users may be able to cause a denial of service."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Denial of service"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://security.FreeBSD.org/advisories/FreeBSD-EN-18:10.syscall.asc",
              "refsource": "CONFIRM",
              "url": "https://security.FreeBSD.org/advisories/FreeBSD-EN-18:10.syscall.asc"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
    "assignerShortName": "freebsd",
    "cveId": "CVE-2018-17154",
    "datePublished": "2018-09-28T13:00:00.000Z",
    "dateReserved": "2018-09-18T00:00:00.000Z",
    "dateUpdated": "2024-09-16T19:31:06.490Z",
    "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.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2018-20786

CVE-2018-17154 (GCVE-0-2018-17154)

Tags

Sightings

Nomenclature