Vulnerability-Lookup

CNVD-2022-20700

Vulnerability from cnvd - Published: 2022-03-18

Title

Nextcloud Server信息泄露漏洞（CNVD-2022-20700）

Description

Nextcloud是一个开源的、功能强大的云存储网盘项目。 Nextcloud Server存在信息泄露漏洞。攻击者可利用该漏洞绕过Nextcloud中的双重身份验证，知晓密码或具备访问WebAuthN可信设备权限的攻击者可对帐户进行访问。

Severity

低

Patch Name

Nextcloud Server信息泄露漏洞（CNVD-2022-20700）的补丁

Patch Description

Nextcloud是一个开源的、功能强大的云存储网盘项目。 Nextcloud Server存在信息泄露漏洞。攻击者可利用该漏洞绕过Nextcloud中的双重身份验证，知晓密码或具备访问WebAuthN可信设备权限的攻击者可对帐户进行访问。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/nextcloud/security-advisories/security/advisories/GHSA-mcpf-v65v-359h

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-32801

Impacted products

Name
['Nextcloud Nextcloud <20.0.12', 'Nextcloud Nextcloud >=21.0.0，<21.0.4', 'Nextcloud Nextcloud >=22.0.0，<22.1.0']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-32801",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-32801"
    }
  },
  "description": "Nextcloud\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u3001\u529f\u80fd\u5f3a\u5927\u7684\u4e91\u5b58\u50a8\u7f51\u76d8\u9879\u76ee\u3002\n\nNextcloud Server\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7Nextcloud\u4e2d\u7684\u53cc\u91cd\u8eab\u4efd\u9a8c\u8bc1\uff0c\u77e5\u6653\u5bc6\u7801\u6216\u5177\u5907\u8bbf\u95eeWebAuthN\u53ef\u4fe1\u8bbe\u5907\u6743\u9650\u7684\u653b\u51fb\u8005\u53ef\u5bf9\u5e10\u6237\u8fdb\u884c\u8bbf\u95ee\u3002",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-20700",
  "openTime": "2022-03-18",
  "patchDescription": "Nextcloud\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u3001\u529f\u80fd\u5f3a\u5927\u7684\u4e91\u5b58\u50a8\u7f51\u76d8\u9879\u76ee\u3002\r\n\r\nNextcloud Server\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7Nextcloud\u4e2d\u7684\u53cc\u91cd\u8eab\u4efd\u9a8c\u8bc1\uff0c\u77e5\u6653\u5bc6\u7801\u6216\u5177\u5907\u8bbf\u95eeWebAuthN\u53ef\u4fe1\u8bbe\u5907\u6743\u9650\u7684\u653b\u51fb\u8005\u53ef\u5bf9\u5e10\u6237\u8fdb\u884c\u8bbf\u95ee\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": "Nextcloud Server\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2022-20700\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Nextcloud Nextcloud \u003c20.0.12",
      "Nextcloud Nextcloud \u003e=21.0.0\uff0c\u003c21.0.4",
      "Nextcloud Nextcloud \u003e=22.0.0\uff0c\u003c22.1.0"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-32801",
  "serverity": "\u4f4e",
  "submitTime": "2021-09-08",
  "title": "Nextcloud Server\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2022-20700\uff09"
}

CVE-2021-32801 (GCVE-0-2021-32801)

Vulnerability from cvelistv5 – Published: 2021-09-07 21:40 – Updated: 2024-08-03 23:33

Title

Exceptions may have logged Encryption-at-Rest key content in Nextcloud server

Summary

Nextcloud server is an open source, self hosted personal cloud. In affected versions logging of exceptions may have resulted in logging potentially sensitive key material for the Nextcloud Encryption-at-Rest functionality. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. If upgrading is not an option users are advised to disable system logging to resolve this issue until such time that an upgrade can be performed Note that ff you do not use the Encryption-at-Rest functionality of Nextcloud you are not affected by this bug.

Severity

5.5 (Medium)


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

CWE

CWE-532 - Insertion of Sensitive Information into Log File

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/nextcloud/security-advisories/…	x_refsource_CONFIRM
https://github.com/nextcloud/server/pull/28082	x_refsource_MISC
https://hackerone.com/reports/1251776	x_refsource_MISC
https://security.gentoo.org/glsa/202208-17	vendor-advisoryx_refsource_GENTOO

Impacted products

1 product

Vendor	Product	Version
nextcloud	security-advisories	Affected: < 20.0.12 Affected: >= 21.0.0, < 21.0.4 Affected: >= 22.0.0, < 22.1.0

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:33:56.245Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mcpf-v65v-359h"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/server/pull/28082"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/1251776"
          },
          {
            "name": "GLSA-202208-17",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202208-17"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "security-advisories",
          "vendor": "nextcloud",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 20.0.12"
            },
            {
              "status": "affected",
              "version": "\u003e= 21.0.0, \u003c 21.0.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 22.0.0, \u003c 22.1.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Nextcloud server is an open source, self hosted personal cloud. In affected versions logging of exceptions may have resulted in logging potentially sensitive key material for the Nextcloud Encryption-at-Rest functionality. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. If upgrading is not an option users are advised to disable system logging to resolve this issue until such time that an upgrade can be performed Note that ff you do not use the Encryption-at-Rest functionality of Nextcloud you are not affected by this bug."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-532",
              "description": "CWE-532: Insertion of Sensitive Information into Log File",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-08-11T00:06:15.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
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        {
          "tags": [
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          "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mcpf-v65v-359h"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextcloud/server/pull/28082"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/1251776"
        },
        {
          "name": "GLSA-202208-17",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202208-17"
        }
      ],
      "source": {
        "advisory": "GHSA-mcpf-v65v-359h",
        "discovery": "UNKNOWN"
      },
      "title": "Exceptions may have logged Encryption-at-Rest key content in Nextcloud server",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-32801",
          "STATE": "PUBLIC",
          "TITLE": "Exceptions may have logged Encryption-at-Rest key content in Nextcloud server"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "security-advisories",
                      "version": {
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                          {
                            "version_value": "\u003c 20.0.12"
                          },
                          {
                            "version_value": "\u003e= 21.0.0, \u003c 21.0.4"
                          },
                          {
                            "version_value": "\u003e= 22.0.0, \u003c 22.1.0"
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            "baseScore": 5.5,
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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.

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.

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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.

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CNVD-2022-20700

CVE-2021-32801 (GCVE-0-2021-32801)

Tags

Sightings

Nomenclature

Related by attack behaviour