Vulnerability-Lookup

CNVD-2021-28361

Vulnerability from cnvd - Published: 2021-04-15

Title

CZ.NIC knot-resolver输入验证错误漏洞

Description

Knot Resolver是捷克共和国CZ.NIC（Cz.nic）协会的一款使用C语言和LuaJIT编写的开源缓存DNS解析器。 knot-resolver 2.3.0之前版本存在安全漏洞，攻击者可利用该漏洞导致拒绝服务。

Severity

中

Patch Name

CZ.NIC knot-resolver输入验证错误漏洞的补丁

Patch Description

Knot Resolver是捷克共和国CZ.NIC（Cz.nic）协会的一款使用C语言和LuaJIT编写的开源缓存DNS解析器。 knot-resolver 2.3.0之前版本存在安全漏洞，攻击者可利用该漏洞导致拒绝服务。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接：https://bugzilla.redhat.com/show_bug.cgi?id=1944328

Reference

https://www.knot-resolver.cz/2018-04-23-knot-resolver-2.3.0.html

Impacted products

Name
CZ.NIC knot-resolver <2.3.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-1110",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2018-1110"
    }
  },
  "description": "Knot Resolver\u662f\u6377\u514b\u5171\u548c\u56fdCZ.NIC\uff08Cz.nic\uff09\u534f\u4f1a\u7684\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u548cLuaJIT\u7f16\u5199\u7684\u5f00\u6e90\u7f13\u5b58DNS\u89e3\u6790\u5668\u3002\n\nknot-resolver 2.3.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1ahttps://bugzilla.redhat.com/show_bug.cgi?id=1944328",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-28361",
  "openTime": "2021-04-15",
  "patchDescription": "Knot Resolver\u662f\u6377\u514b\u5171\u548c\u56fdCZ.NIC\uff08Cz.nic\uff09\u534f\u4f1a\u7684\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u548cLuaJIT\u7f16\u5199\u7684\u5f00\u6e90\u7f13\u5b58DNS\u89e3\u6790\u5668\u3002\r\n\r\nknot-resolver 2.3.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "CZ.NIC knot-resolver\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "CZ.NIC knot-resolver \u003c2.3.0"
  },
  "referenceLink": "https://www.knot-resolver.cz/2018-04-23-knot-resolver-2.3.0.html",
  "serverity": "\u4e2d",
  "submitTime": "2021-04-14",
  "title": "CZ.NIC knot-resolver\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2018-1110 (GCVE-0-2018-1110)

Vulnerability from cvelistv5 – Published: 2021-03-30 01:55 – Updated: 2024-08-05 03:51

Summary

A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.

Severity

No CVSS data available.

CWE

CWE-20

Assigner

redhat redhat root

References

2 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1944328	x_refsource_MISC
https://www.knot-resolver.cz/2018-04-23-knot-reso…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	knot-resolver	Affected: Knot Resolver 2.3.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T03:51:48.661Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1944328"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.knot-resolver.cz/2018-04-23-knot-resolver-2.3.0.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "knot-resolver",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Knot Resolver 2.3.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-03-30T01:55:31.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1944328"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.knot-resolver.cz/2018-04-23-knot-resolver-2.3.0.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2018-1110",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "knot-resolver",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Knot Resolver 2.3.0"
                          }
                        ]
                      }
                    }
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                },
                "vendor_name": "n/a"
              }
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          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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        },
        "problemtype": {
          "problemtype_data": [
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                  "lang": "eng",
                  "value": "CWE-20"
                }
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        },
        "references": {
          "reference_data": [
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              "refsource": "MISC",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1944328"
            },
            {
              "name": "https://www.knot-resolver.cz/2018-04-23-knot-resolver-2.3.0.html",
              "refsource": "MISC",
              "url": "https://www.knot-resolver.cz/2018-04-23-knot-resolver-2.3.0.html"
            }
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  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2018-1110",
    "datePublished": "2021-03-30T01:55:31.000Z",
    "dateReserved": "2017-12-04T00:00:00.000Z",
    "dateUpdated": "2024-08-05T03:51:48.661Z",
    "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.

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.

Action not permitted

CNVD-2021-28361

CVE-2018-1110 (GCVE-0-2018-1110)

Tags

Sightings

Nomenclature

Related by attack behaviour