Vulnerability-Lookup

CNVD-2022-18416

Vulnerability from cnvd - Published: 2022-03-11

Title

Nextcloud Talk跨站脚本漏洞（CNVD-2022-18416）

Description

Nextcloud Talk是德国Nextcloud公司的一款自托管的本地音频/视频和聊天通信服务。 Nextcloud Talk存在跨站脚本漏洞，远程攻击者可利用该漏洞在网站上下文中在用户浏览器中注入和执行任意HTML和脚本代码。

Severity

中

Patch Name

Nextcloud Talk跨站脚本漏洞（CNVD-2022-18416）的补丁

Patch Description

Nextcloud Talk是德国Nextcloud公司的一款自托管的本地音频/视频和聊天通信服务。 Nextcloud Talk存在跨站脚本漏洞，远程攻击者可利用该漏洞在网站上下文中在用户浏览器中注入和执行任意HTML和脚本代码。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-xhxq-f4vg-jw5g/

Reference

https://hackerone.com/reports/1135481

Impacted products

Name
['Nextcloud NextCloud Talk <22.0.1', 'Nextcloud NextCloud Talk <10.0.7', 'Nextcloud NextCloud Talk <10.1.4', 'Nextcloud NextCloud Talk <11.1.2', 'Nextcloud NextCloud Talk <11.2.0', 'Nextcloud NextCloud Talk <12.0.0']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-39222",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-39222"
    }
  },
  "description": "Nextcloud Talk\u662f\u5fb7\u56fdNextcloud\u516c\u53f8\u7684\u4e00\u6b3e\u81ea\u6258\u7ba1\u7684\u672c\u5730\u97f3\u9891/\u89c6\u9891\u548c\u804a\u5929\u901a\u4fe1\u670d\u52a1\u3002\n\nNextcloud Talk\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u7f51\u7ad9\u4e0a\u4e0b\u6587\u4e2d\u5728\u7528\u6237\u6d4f\u89c8\u5668\u4e2d\u6ce8\u5165\u548c\u6267\u884c\u4efb\u610fHTML\u548c\u811a\u672c\u4ee3\u7801\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-xhxq-f4vg-jw5g/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-18416",
  "openTime": "2022-03-11",
  "patchDescription": "Nextcloud Talk\u662f\u5fb7\u56fdNextcloud\u516c\u53f8\u7684\u4e00\u6b3e\u81ea\u6258\u7ba1\u7684\u672c\u5730\u97f3\u9891/\u89c6\u9891\u548c\u804a\u5929\u901a\u4fe1\u670d\u52a1\u3002\r\n\r\nNextcloud Talk\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u7f51\u7ad9\u4e0a\u4e0b\u6587\u4e2d\u5728\u7528\u6237\u6d4f\u89c8\u5668\u4e2d\u6ce8\u5165\u548c\u6267\u884c\u4efb\u610fHTML\u548c\u811a\u672c\u4ee3\u7801\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 Talk\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2022-18416\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Nextcloud NextCloud Talk \u003c22.0.1",
      "Nextcloud NextCloud Talk \u003c10.0.7",
      "Nextcloud NextCloud Talk \u003c10.1.4",
      "Nextcloud NextCloud Talk \u003c11.1.2",
      "Nextcloud NextCloud Talk \u003c11.2.0",
      "Nextcloud NextCloud Talk \u003c12.0.0"
    ]
  },
  "referenceLink": "https://hackerone.com/reports/1135481",
  "serverity": "\u4e2d",
  "submitTime": "2021-12-10",
  "title": "Nextcloud Talk\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2022-18416\uff09"
}

CVE-2021-39222 (GCVE-0-2021-39222)

Vulnerability from cvelistv5 – Published: 2021-11-15 18:30 – Updated: 2024-08-04 01:58

Title

XSS in Talk

Summary

Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Talk application was vulnerable to a stored Cross-Site Scripting (XSS) vulnerability. For exploitation, a user would need to right-click on a malicious file and open the file in a new tab. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. It is recommended that the Nextcloud Talk application is upgraded to patched versions 10.0.7, 10.1.4, 11.1.2, 11.2.0 or 12.0.0. As a workaround, use a browser that has support for Content-Security-Policy.

Severity

6.4 (Medium)


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

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/nextcloud/security-advisories/…	x_refsource_CONFIRM
https://github.com/nextcloud/spreed/pull/542	x_refsource_MISC
https://hackerone.com/reports/1135481	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
nextcloud	security-advisories	Affected: < 10.0.7 Affected: >= 10.1.0, < 10.1.4 Affected: >= 11.1.0, < 11.1.2 Affected: < 11.2.0 Affected: >= 12.0.0.alpha-1, < 12.0.0

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JSON

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              "x_refsource_MISC",
              "x_transferred"
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            "url": "https://hackerone.com/reports/1135481"
          }
        ],
        "title": "CVE Program Container"
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    ],
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              "status": "affected",
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            },
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            {
              "status": "affected",
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          "lang": "en",
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        }
      ],
      "metrics": [
        {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.4,
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            }
          ]
        },
        {
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        "discovery": "UNKNOWN"
      },
      "title": "XSS in Talk",
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        },
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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.

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.

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.