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CNVD-2019-47006

Vulnerability from cnvd - Published: 2019-12-26

Title

Linux kernel代码问题漏洞（ CNVD-2019-47006）

Description

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel中NFS的实现存在代码问题漏洞。该漏洞源于网络系统或产品的代码开发过程中存在设计或实现不当的问题。攻击者可利用漏洞使用无效的NFS序列触发空指针解引用。

Severity

中

Patch Name

Linux kernel代码问题漏洞（ CNVD-2019-47006）的补丁

Patch Description

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel中NFS的实现存在代码问题漏洞。该漏洞源于网络系统或产品的代码开发过程中存在设计或实现不当的问题。攻击者可利用漏洞使用无效的NFS序列触发空指针解引用。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

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=01310bb7c9c98752cc763b36532fab028e0f8f81

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-16871

Impacted products

Name
['Linux Linux kernel 3.x', 'Linux Linux kernel 4.*，<4.20']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-16871",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16871"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel\u4e2dNFS\u7684\u5b9e\u73b0\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u7684\u4ee3\u7801\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u5b58\u5728\u8bbe\u8ba1\u6216\u5b9e\u73b0\u4e0d\u5f53\u7684\u95ee\u9898\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u4f7f\u7528\u65e0\u6548\u7684NFS\u5e8f\u5217\u89e6\u53d1\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u3002",
  "formalWay": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=01310bb7c9c98752cc763b36532fab028e0f8f81",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-47006",
  "openTime": "2019-12-26",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel\u4e2dNFS\u7684\u5b9e\u73b0\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u7684\u4ee3\u7801\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u5b58\u5728\u8bbe\u8ba1\u6216\u5b9e\u73b0\u4e0d\u5f53\u7684\u95ee\u9898\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u4f7f\u7528\u65e0\u6548\u7684NFS\u5e8f\u5217\u89e6\u53d1\u7a7a\u6307\u9488\u89e3\u5f15\u7528\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": "Linux kernel\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08 CNVD-2019-47006\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Linux Linux kernel 3.x",
      "Linux Linux kernel 4.*\uff0c\u003c4.20"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-16871",
  "serverity": "\u4e2d",
  "submitTime": "2019-06-05",
  "title": "Linux kernel\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08 CNVD-2019-47006\uff09"
}

CVE-2018-16871 (GCVE-0-2018-16871)

Vulnerability from cvelistv5 – Published: 2019-07-30 16:19 – Updated: 2024-08-05 10:32

Summary

A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.

Severity

7.5 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-476

Assigner

redhat redhat root

References

7 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2019:2696	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2730	vendor-advisoryx_refsource_REDHAT
https://support.f5.com/csp/article/K18657134	x_refsource_CONFIRM
https://support.f5.com/csp/article/K18657134?utm_…	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2020:0740	vendor-advisoryx_refsource_REDHAT
https://security.netapp.com/advisory/ntap-2021100…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Red Hat	kernel:	Affected: all 3.x, all 4.x up to 4.20

Show details on NVD website

JSON

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{
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          "dateUpdated": "2024-08-05T10:32:54.042Z",
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        }
      ],
      "metrics": [
        {
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
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          "url": "https://support.f5.com/csp/article/K18657134?utm_source=f5support\u0026amp%3Butm_medium=RSS"
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          "url": "https://security.netapp.com/advisory/ntap-20211004-0002/"
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    "datePublished": "2019-07-30T16:19:25.000Z",
    "dateReserved": "2018-09-11T00:00:00.000Z",
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    "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.

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.

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CNVD-2019-47006

CVE-2018-16871 (GCVE-0-2018-16871)

Tags

Sightings

Nomenclature

Related by attack behaviour