cnvd - cnvd-2021-66913

CNVD-2021-66913

Vulnerability from cnvd - Published: 2021-08-31

Title

Misskey跨站脚本漏洞（CNVD-2021-66913）

Description

Misskey是一套微型博客平台。 Misskey 12.51.0之前版本存在跨站脚本漏洞，该漏洞源于Web客户端的内置对话框对于用户输入没有进行有效的验证与转义。攻击者可以在对话框显示恶意字符串，并利用跨站脚本攻击破坏API的请求令牌。

Severity

高

Patch Name

Misskey跨站脚本漏洞（CNVD-2021-66913）的补丁

Patch Description

Misskey是一套微型博客平台。 Misskey 12.51.0之前版本存在跨站脚本漏洞，该漏洞源于Web客户端的内置对话框对于用户输入没有进行有效的验证与转义。攻击者可以在对话框显示恶意字符串，并利用跨站脚本攻击破坏API的请求令牌。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://github.com/misskey-dev/misskey/security/advisories/GHSA-pmmv-jwqh-f5ww

Reference

https://github.com/misskey-dev/misskey/commit/ec203f7f795766f76b55fecc9248168c1cdf6c99

Impacted products

Name
Misskey Misskey <12.51.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-39169"
    }
  },
  "description": "Misskey\u662f\u4e00\u5957\u5fae\u578b\u535a\u5ba2\u5e73\u53f0\u3002\n\nMisskey 12.51.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eWeb\u5ba2\u6237\u7aef\u7684\u5185\u7f6e\u5bf9\u8bdd\u6846\u5bf9\u4e8e\u7528\u6237\u8f93\u5165\u6ca1\u6709\u8fdb\u884c\u6709\u6548\u7684\u9a8c\u8bc1\u4e0e\u8f6c\u4e49\u3002\u653b\u51fb\u8005\u53ef\u4ee5\u5728\u5bf9\u8bdd\u6846\u663e\u793a\u6076\u610f\u5b57\u7b26\u4e32\uff0c\u5e76\u5229\u7528\u8de8\u7ad9\u811a\u672c\u653b\u51fb\u7834\u574fAPI\u7684\u8bf7\u6c42\u4ee4\u724c\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\uff1a\r\nhttps://github.com/misskey-dev/misskey/security/advisories/GHSA-pmmv-jwqh-f5ww",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-66913",
  "openTime": "2021-08-31",
  "patchDescription": "Misskey\u662f\u4e00\u5957\u5fae\u578b\u535a\u5ba2\u5e73\u53f0\u3002\r\n\r\nMisskey 12.51.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eWeb\u5ba2\u6237\u7aef\u7684\u5185\u7f6e\u5bf9\u8bdd\u6846\u5bf9\u4e8e\u7528\u6237\u8f93\u5165\u6ca1\u6709\u8fdb\u884c\u6709\u6548\u7684\u9a8c\u8bc1\u4e0e\u8f6c\u4e49\u3002\u653b\u51fb\u8005\u53ef\u4ee5\u5728\u5bf9\u8bdd\u6846\u663e\u793a\u6076\u610f\u5b57\u7b26\u4e32\uff0c\u5e76\u5229\u7528\u8de8\u7ad9\u811a\u672c\u653b\u51fb\u7834\u574fAPI\u7684\u8bf7\u6c42\u4ee4\u724c\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": "Misskey\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2021-66913\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Misskey Misskey \u003c12.51.0"
  },
  "referenceLink": "https://github.com/misskey-dev/misskey/commit/ec203f7f795766f76b55fecc9248168c1cdf6c99",
  "serverity": "\u9ad8",
  "submitTime": "2021-08-31",
  "title": "Misskey\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2021-66913\uff09"
}

CVE-2021-39169 (GCVE-0-2021-39169)

Vulnerability from cvelistv5 – Published: 2021-08-27 12:40 – Updated: 2024-08-04 01:58

Summary

Misskey is a decentralized microblogging platform. In versions of Misskey prior to 12.51.0, malicious actors can use the web client built-in dialog to display a malicious string, leading to cross-site scripting (XSS). XSS could compromise the API request token. This issue has been fixed in version 12.51.0. There are no known workarounds aside from upgrading.

Severity ?

8 (High)


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

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/misskey-dev/misskey/security/a…	x_refsource_CONFIRM
	https://github.com/misskey-dev/misskey/commit/ec2…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	misskey-dev	misskey	Affected: < 12.51.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:58:18.216Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-pmmv-jwqh-f5ww"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/misskey-dev/misskey/commit/ec203f7f795766f76b55fecc9248168c1cdf6c99"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "misskey",
          "vendor": "misskey-dev",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 12.51.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Misskey is a decentralized microblogging platform. In versions of Misskey prior to 12.51.0, malicious actors can use the web client built-in dialog to display a malicious string, leading to cross-site scripting (XSS). XSS could compromise the API request token. This issue has been fixed in version 12.51.0. There are no known workarounds aside from upgrading."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-08-27T12:40:09",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-pmmv-jwqh-f5ww"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/misskey-dev/misskey/commit/ec203f7f795766f76b55fecc9248168c1cdf6c99"
        }
      ],
      "source": {
        "advisory": "GHSA-pmmv-jwqh-f5ww",
        "discovery": "UNKNOWN"
      },
      "title": "XSS vulnerability using dialog",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-39169",
          "STATE": "PUBLIC",
          "TITLE": "XSS vulnerability using dialog"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "misskey",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 12.51.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "misskey-dev"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "value": "Misskey is a decentralized microblogging platform. In versions of Misskey prior to 12.51.0, malicious actors can use the web client built-in dialog to display a malicious string, leading to cross-site scripting (XSS). XSS could compromise the API request token. This issue has been fixed in version 12.51.0. There are no known workarounds aside from upgrading."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-pmmv-jwqh-f5ww",
              "refsource": "CONFIRM",
              "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-pmmv-jwqh-f5ww"
            },
            {
              "name": "https://github.com/misskey-dev/misskey/commit/ec203f7f795766f76b55fecc9248168c1cdf6c99",
              "refsource": "MISC",
              "url": "https://github.com/misskey-dev/misskey/commit/ec203f7f795766f76b55fecc9248168c1cdf6c99"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-pmmv-jwqh-f5ww",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-39169",
    "datePublished": "2021-08-27T12:40:09",
    "dateReserved": "2021-08-16T00:00:00",
    "dateUpdated": "2024-08-04T01:58:18.216Z",
    "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-2021-66913

CVE-2021-39169 (GCVE-0-2021-39169)

Tags

Sightings

Nomenclature