Vulnerability-Lookup

CNVD-2022-20690

Vulnerability from cnvd - Published: 2022-03-18

Title

Nextcloud server拒绝服务漏洞（CNVD-2022-20690）

Description

Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud server存在拒绝服务漏洞，该漏洞源于网络系统或产品在图像内存上执行操作时，未正确验证数据边界，攻击者可利用该漏洞通过上传特制文件来导致拒绝服务。

Severity

中

Patch Name

Nextcloud server拒绝服务漏洞（CNVD-2022-20690）的补丁

Patch Description

Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud server存在拒绝服务漏洞，该漏洞源于网络系统或产品在图像内存上执行操作时，未正确验证数据边界，攻击者可利用该漏洞通过上传特制文件来导致拒绝服务。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

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf3h-xf4q-mh89

Reference

https://github.com/nextcloud/server/pull/30291

Impacted products

Name
['Nextcloud Nextcloud Server >=21.0.0，<21.0.8', 'Nextcloud Nextcloud Server >=22.0.0，<22.2.4', 'Nextcloud Nextcloud Server 23.0.0']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-24741",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2022-24741"
    }
  },
  "description": "Nextcloud\u662f\u5fb7\u56fdNextcloud\u516c\u53f8\u7684\u4e00\u5957\u5f00\u6e90\u7684\u81ea\u6258\u7ba1\u6587\u4ef6\u540c\u6b65\u548c\u5171\u4eab\u7684\u901a\u4fe1\u5e94\u7528\u5e73\u53f0\u3002\n\nNextcloud server\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u5728\u56fe\u50cf\u5185\u5b58\u4e0a\u6267\u884c\u64cd\u4f5c\u65f6\uff0c\u672a\u6b63\u786e\u9a8c\u8bc1\u6570\u636e\u8fb9\u754c\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u4e0a\u4f20\u7279\u5236\u6587\u4ef6\u6765\u5bfc\u81f4\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/nextcloud/security-advisories/security/advisories/GHSA-jf3h-xf4q-mh89",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-20690",
  "openTime": "2022-03-18",
  "patchDescription": "Nextcloud\u662f\u5fb7\u56fdNextcloud\u516c\u53f8\u7684\u4e00\u5957\u5f00\u6e90\u7684\u81ea\u6258\u7ba1\u6587\u4ef6\u540c\u6b65\u548c\u5171\u4eab\u7684\u901a\u4fe1\u5e94\u7528\u5e73\u53f0\u3002\r\n\r\nNextcloud server\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u5728\u56fe\u50cf\u5185\u5b58\u4e0a\u6267\u884c\u64cd\u4f5c\u65f6\uff0c\u672a\u6b63\u786e\u9a8c\u8bc1\u6570\u636e\u8fb9\u754c\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u4e0a\u4f20\u7279\u5236\u6587\u4ef6\u6765\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": "Nextcloud server\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2022-20690\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Nextcloud Nextcloud Server \u003e=21.0.0\uff0c\u003c21.0.8",
      "Nextcloud Nextcloud Server \u003e=22.0.0\uff0c\u003c22.2.4",
      "Nextcloud Nextcloud Server 23.0.0"
    ]
  },
  "referenceLink": "https://github.com/nextcloud/server/pull/30291",
  "serverity": "\u4e2d",
  "submitTime": "2022-03-11",
  "title": "Nextcloud server\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2022-20690\uff09"
}

CVE-2022-24741 (GCVE-0-2022-24741)

Vulnerability from cvelistv5 – Published: 2022-03-09 21:30 – Updated: 2025-04-22 18:19

Title

High memory usage in Nextcloud server

Summary

Nextcloud server is an open source, self hosted cloud style services platform. In affected versions an attacker can cause a denial of service by uploading specially crafted files which will cause the server to allocate too much memory / CPU. It is recommended that the Nextcloud Server is upgraded to 21.0.8 , 22.2.4 or 23.0.1. Users unable to upgrade should disable preview generation with the `'enable_previews'` config flag.

Severity

3.5 (Low)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-22 15:49 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

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/30291	x_refsource_MISC
https://hackerone.com/reports/1261225	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: < 21.0.8 Affected: >= 22.0.0, < 22.2.4 Affected: >= 23.0.0, < 23.0.1

Show details on NVD website

JSON

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{
  "containers": {
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          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf3h-xf4q-mh89"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/server/pull/30291"
          },
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            "tags": [
              "x_refsource_MISC",
              "x_transferred"
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            "url": "https://hackerone.com/reports/1261225"
          },
          {
            "name": "GLSA-202208-17",
            "tags": [
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              "x_refsource_GENTOO",
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            "url": "https://security.gentoo.org/glsa/202208-17"
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        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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                "id": "CVE-2022-24741",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-22T15:49:20.813688Z",
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              },
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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            },
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        }
      ],
      "metrics": [
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          "url": "https://hackerone.com/reports/1261225"
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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-2022-20690

CVE-2022-24741 (GCVE-0-2022-24741)

Tags

Sightings

Nomenclature

Related by attack behaviour