cnvd - cnvd-2021-100589

CNVD-2021-100589

Vulnerability from cnvd - Published: 2021-12-17

Title

Discourse存在未明漏洞（CNVD-2021-100589）

Description

Discourse是一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse存在安全漏洞，攻击者可利用该漏洞毒化匿名(即未登录)用户的缓存，导致部分拒绝服务。

Severity

中

Patch Name

Discourse存在未明漏洞（CNVD-2021-100589）的补丁

Patch Description

Discourse是一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse存在安全漏洞，攻击者可利用该漏洞毒化匿名(即未登录)用户的缓存，导致部分拒绝服务。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

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp

Reference

https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp

Impacted products

Name
Discourse Discourse

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-43794",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-43794"
    }
  },
  "description": "Discourse\u662f\u4e00\u5957\u5f00\u6e90\u7684\u793e\u533a\u8ba8\u8bba\u5e73\u53f0\u3002\u8be5\u5e73\u53f0\u5305\u62ec\u793e\u533a\u3001\u7535\u5b50\u90ae\u4ef6\u548c\u804a\u5929\u5ba4\u7b49\u529f\u80fd\u3002\n\nDiscourse\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6bd2\u5316\u533f\u540d(\u5373\u672a\u767b\u5f55)\u7528\u6237\u7684\u7f13\u5b58\uff0c\u5bfc\u81f4\u90e8\u5206\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-100589",
  "openTime": "2021-12-17",
  "patchDescription": "Discourse\u662f\u4e00\u5957\u5f00\u6e90\u7684\u793e\u533a\u8ba8\u8bba\u5e73\u53f0\u3002\u8be5\u5e73\u53f0\u5305\u62ec\u793e\u533a\u3001\u7535\u5b50\u90ae\u4ef6\u548c\u804a\u5929\u5ba4\u7b49\u529f\u80fd\u3002\r\n\r\nDiscourse\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6bd2\u5316\u533f\u540d(\u5373\u672a\u767b\u5f55)\u7528\u6237\u7684\u7f13\u5b58\uff0c\u5bfc\u81f4\u90e8\u5206\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": "Discourse\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-100589\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Discourse Discourse"
  },
  "referenceLink": "https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp",
  "serverity": "\u4e2d",
  "submitTime": "2021-12-03",
  "title": "Discourse\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-100589\uff09"
}

CVE-2021-43794 (GCVE-0-2021-43794)

Vulnerability from cvelistv5 – Published: 2021-12-01 19:40 – Updated: 2024-08-04 04:03

Summary

Discourse is an open source discussion platform. In affected versions an attacker can poison the cache for anonymous (i.e. not logged in) users, such that the users are shown a JSON blob instead of the HTML page. This can lead to a partial denial-of-service. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-610 - Externally Controlled Reference to a Resource in Another Sphere

Assigner

GitHub_M

References

URL

Tags

	https://github.com/discourse/discourse/commit/2da…	x_refsource_MISC
	https://github.com/discourse/discourse/security/a…	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	discourse	discourse	Affected: stable < 2.7.11 Affected: beta < 2.8.0.beta9 Affected: tests-passed < 2.8.0.beta9

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T04:03:08.879Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/discourse/discourse/commit/2da0001965c6d8632d723c46ea5df9f22a1a23f1"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "discourse",
          "vendor": "discourse",
          "versions": [
            {
              "status": "affected",
              "version": "stable \u003c 2.7.11"
            },
            {
              "status": "affected",
              "version": "beta \u003c 2.8.0.beta9"
            },
            {
              "status": "affected",
              "version": "tests-passed \u003c 2.8.0.beta9"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Discourse is an open source discussion platform. In affected versions an attacker can poison the cache for anonymous (i.e. not logged in) users, such that the users are shown a JSON blob instead of the HTML page. This can lead to a partial denial-of-service. This issue is patched in the latest stable, beta and tests-passed versions of Discourse."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "cweId": "CWE-610",
              "description": "CWE-610: Externally Controlled Reference to a Resource in Another Sphere",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-01T19:40:10",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/discourse/discourse/commit/2da0001965c6d8632d723c46ea5df9f22a1a23f1"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp"
        }
      ],
      "source": {
        "advisory": "GHSA-249g-pc77-65hp",
        "discovery": "UNKNOWN"
      },
      "title": "Anonymous user cache poisoning via development-mode header in Discourse",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-43794",
          "STATE": "PUBLIC",
          "TITLE": "Anonymous user cache poisoning via development-mode header in Discourse"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "discourse",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "stable \u003c 2.7.11"
                          },
                          {
                            "version_value": "beta \u003c 2.8.0.beta9"
                          },
                          {
                            "version_value": "tests-passed \u003c 2.8.0.beta9"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "discourse"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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            }
          ]
        },
        "impact": {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-610: Externally Controlled Reference to a Resource in Another Sphere"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/discourse/discourse/commit/2da0001965c6d8632d723c46ea5df9f22a1a23f1",
              "refsource": "MISC",
              "url": "https://github.com/discourse/discourse/commit/2da0001965c6d8632d723c46ea5df9f22a1a23f1"
            },
            {
              "name": "https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp",
              "refsource": "CONFIRM",
              "url": "https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-249g-pc77-65hp",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-43794",
    "datePublished": "2021-12-01T19:40:10",
    "dateReserved": "2021-11-16T00:00:00",
    "dateUpdated": "2024-08-04T04:03:08.879Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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-2021-100589

CVE-2021-43794 (GCVE-0-2021-43794)

Tags

Sightings

Nomenclature