Vulnerability-Lookup

CNVD-2022-15523

Vulnerability from cnvd - Published: 2022-03-01

Title

Zulip server存在未明漏洞（CNVD-2022-15523）

Description

Zulip server是美国Zulip公司的一款开源的团队聊天应用程序。 Zulip server存在安全漏洞，该漏洞源于驻留多个组织的zlip Server部署很容易受到攻击，在一个组织中创建的邀请(可能是一个具有较高权限的角色)可以被用来加入任何其他组织。这绕过了对用户电子邮件地址所需域的任何限制，可以用来获得对只有邀请才能访问的组织的访问权。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

Zulip server存在未明漏洞（CNVD-2022-15523）的补丁

Patch Description

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/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc

Reference

https://nvd.nist.gov/vuln/detail/CVE-2022-21706

Impacted products

Name
Zulip Zulip Server

Show details on source website

JSON

To clipboard

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}

CVE-2022-21706 (GCVE-0-2022-21706)

Vulnerability from cvelistv5 – Published: 2022-02-25 23:25 – Updated: 2025-04-23 19:00

Title

Multi-use invitations can grant access to other organizations in Zulip

Summary

Zulip is an open-source team collaboration tool with topic-based threading. Zulip Server version 2.0.0 and above are vulnerable to insufficient access control with multi-use invitations. A Zulip Server deployment which hosts multiple organizations is vulnerable to an attack where an invitation created in one organization (potentially as a role with elevated permissions) can be used to join any other organization. This bypasses any restrictions on required domains on users' email addresses, may be used to gain access to organizations which are only accessible by invitation, and may be used to gain access with elevated privileges. This issue has been patched in release 4.10. There are no known workarounds for this issue. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ ### References _Are there any links users can visit to find out more?_ ### For more information If you have any questions or comments about this advisory, you can discuss them on the [developer community Zulip server](https://zulip.com/developer-community/), or email the [Zulip security team](mailto:security@zulip.com).

Severity

7.2 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 15:57 UTC

CWE

CWE-863 - Incorrect Authorization
CWE-284 - Improper Access Control

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/zulip/zulip/security/advisorie…	x_refsource_CONFIRM
https://github.com/zulip/zulip/commit/88917019f03…	x_refsource_MISC
https://blog.zulip.com/2022/02/25/zulip-cloud-inv…	x_refsource_MISC
https://blog.zulip.com/2022/02/25/zulip-server-4-…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
zulip	zulip	Affected: >= 2.0.0, < 4.10

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T02:53:34.765Z",
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          },
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            ],
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          },
          {
            "tags": [
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            ],
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          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-21706",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
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                "timestamp": "2025-04-23T15:57:16.778351Z",
                "version": "2.0.3"
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        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
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            "availabilityImpact": "NONE",
            "baseScore": 7.2,
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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.