Vulnerability-Lookup

CNVD-2018-20775

Vulnerability from cnvd - Published: 2018-10-12

Title

FreeBSD空指针引用漏洞

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存在空指针引用漏洞，本地攻击者可利用该漏洞造成内核崩溃（空指针逆向引用）。

Severity

低

Patch Name

FreeBSD空指针引用漏洞的补丁

Patch 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存在空指针引用漏洞，本地攻击者可利用该漏洞造成内核崩溃（空指针逆向引用）。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

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-18:11.listen.asc

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-6925

Impacted products

Name
['FreeBSD FreeBSD <FreeBSD 11.2-STABLE(r338986)', 'FreeBSD FreeBSD <11.2-RELEASE-p4', 'FreeBSD FreeBSD <11.1-RELEASE-p15', 'FreeBSD FreeBSD <10.4-STABLE(r338985)', 'FreeBSD FreeBSD <10.4-RELEASE-p13']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-6925",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6925"
    }
  },
  "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\u5b58\u5728\u7a7a\u6307\u9488\u5f15\u7528\u6f0f\u6d1e\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u5185\u6838\u5d29\u6e83\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\u3002",
  "discovererName": "Jakub Jirasek, Secunia",
  "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-18:11.listen.asc",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-20775",
  "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\u5b58\u5728\u7a7a\u6307\u9488\u5f15\u7528\u6f0f\u6d1e\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u5185\u6838\u5d29\u6e83\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\u7684\u8865\u4e01",
  "products": {
    "product": [
      "FreeBSD FreeBSD \u003cFreeBSD 11.2-STABLE(r338986)",
      "FreeBSD FreeBSD \u003c11.2-RELEASE-p4",
      "FreeBSD FreeBSD \u003c11.1-RELEASE-p15",
      "FreeBSD FreeBSD \u003c10.4-STABLE(r338985)",
      "FreeBSD FreeBSD \u003c10.4-RELEASE-p13"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-6925",
  "serverity": "\u4f4e",
  "submitTime": "2018-09-30",
  "title": "FreeBSD\u7a7a\u6307\u9488\u5f15\u7528\u6f0f\u6d1e"
}

CVE-2018-6925 (GCVE-0-2018-6925)

Vulnerability from cvelistv5 – Published: 2018-09-28 13:00 – Updated: 2024-09-17 00:26

Summary

In FreeBSD before 11.2-STABLE(r338986), 11.2-RELEASE-p4, 11.1-RELEASE-p15, 10.4-STABLE(r338985), and 10.4-RELEASE-p13, due to improper maintenance of IPv6 protocol control block flags through various failure paths, an unprivileged authenticated local user may be able to cause a NULL pointer dereference causing the kernel to crash.

Severity

No CVSS data available.

CWE

Denial of service

Assigner

freebsd mitre root

References

2 references

URL	Tags
https://security.FreeBSD.org/advisories/FreeBSD-E…	x_refsource_CONFIRM
https://www.flexera.com/company/secunia-research/…	x_refsource_MISC

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 Affected: 10.x before 10.4-RELEASE-p13

Date Public

2018-09-27 00:00

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T06:17:17.338Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.FreeBSD.org/advisories/FreeBSD-EN-18:11.listen.asc"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.flexera.com/company/secunia-research/advisories/SR-2018-21.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "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"
            },
            {
              "status": "affected",
              "version": "10.x before 10.4-RELEASE-p13"
            }
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        }
      ],
      "datePublic": "2018-09-27T00:00:00.000Z",
      "descriptions": [
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          "lang": "en",
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Denial of service",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-11-30T20:57:01.000Z",
        "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "shortName": "freebsd"
      },
      "references": [
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        },
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            "x_refsource_MISC"
          ],
          "url": "https://www.flexera.com/company/secunia-research/advisories/SR-2018-21.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secteam@freebsd.org",
          "DATE_PUBLIC": "2018-09-27T00:00:00",
          "ID": "CVE-2018-6925",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
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                    {
                      "product_name": "FreeBSD",
                      "version": {
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                          },
                          {
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                          },
                          {
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                    }
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              "description": [
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                  "lang": "eng",
                  "value": "Denial of service"
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          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://security.FreeBSD.org/advisories/FreeBSD-EN-18:11.listen.asc",
              "refsource": "CONFIRM",
              "url": "https://security.FreeBSD.org/advisories/FreeBSD-EN-18:11.listen.asc"
            },
            {
              "name": "https://www.flexera.com/company/secunia-research/advisories/SR-2018-21.html",
              "refsource": "MISC",
              "url": "https://www.flexera.com/company/secunia-research/advisories/SR-2018-21.html"
            }
          ]
        }
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  },
  "cveMetadata": {
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    "datePublished": "2018-09-28T13:00:00.000Z",
    "dateReserved": "2018-02-12T00:00:00.000Z",
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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.

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.