Vulnerability-Lookup

CNVD-2022-06909

Vulnerability from cnvd - Published: 2022-01-26

Title

MessageBus路径遍历漏洞

Description

MessageBus是用于 Ruby 进程和 Web 客户端的可靠、健壮的消息传递总线。 MessageBus存在路径遍历漏洞，该漏洞源于message_bus 缺少对于路径的数据的限制与过滤，部署message_bus时启用了诊断功能(默认关闭)的用户容易出现路径遍历错误，如果意外用户访问诊断路由，可能会导致机器上的秘密信息泄露。目前没有详细的漏洞细节提供。

Severity

低

Patch Name

MessageBus路径遍历漏洞的补丁

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/discourse/message_bus/security/advisories/GHSA-xmgj-5fh3-xjmm

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-43840

Impacted products

Name
MessageBus MessageBus <3.3.7

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-43840"
    }
  },
  "description": "MessageBus\u662f\u7528\u4e8e Ruby \u8fdb\u7a0b\u548c Web \u5ba2\u6237\u7aef\u7684\u53ef\u9760\u3001\u5065\u58ee\u7684\u6d88\u606f\u4f20\u9012\u603b\u7ebf\u3002\n\nMessageBus\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8emessage_bus \u7f3a\u5c11\u5bf9\u4e8e\u8def\u5f84\u7684\u6570\u636e\u7684\u9650\u5236\u4e0e\u8fc7\u6ee4\uff0c\u90e8\u7f72message_bus\u65f6\u542f\u7528\u4e86\u8bca\u65ad\u529f\u80fd(\u9ed8\u8ba4\u5173\u95ed)\u7684\u7528\u6237\u5bb9\u6613\u51fa\u73b0\u8def\u5f84\u904d\u5386\u9519\u8bef\uff0c\u5982\u679c\u610f\u5916\u7528\u6237\u8bbf\u95ee\u8bca\u65ad\u8def\u7531\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u673a\u5668\u4e0a\u7684\u79d8\u5bc6\u4fe1\u606f\u6cc4\u9732\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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/discourse/message_bus/security/advisories/GHSA-xmgj-5fh3-xjmm",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-06909",
  "openTime": "2022-01-26",
  "patchDescription": "MessageBus\u662f\u7528\u4e8e Ruby \u8fdb\u7a0b\u548c Web \u5ba2\u6237\u7aef\u7684\u53ef\u9760\u3001\u5065\u58ee\u7684\u6d88\u606f\u4f20\u9012\u603b\u7ebf\u3002\r\n\r\nMessageBus\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8emessage_bus \u7f3a\u5c11\u5bf9\u4e8e\u8def\u5f84\u7684\u6570\u636e\u7684\u9650\u5236\u4e0e\u8fc7\u6ee4\uff0c\u90e8\u7f72message_bus\u65f6\u542f\u7528\u4e86\u8bca\u65ad\u529f\u80fd(\u9ed8\u8ba4\u5173\u95ed)\u7684\u7528\u6237\u5bb9\u6613\u51fa\u73b0\u8def\u5f84\u904d\u5386\u9519\u8bef\uff0c\u5982\u679c\u610f\u5916\u7528\u6237\u8bbf\u95ee\u8bca\u65ad\u8def\u7531\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u673a\u5668\u4e0a\u7684\u79d8\u5bc6\u4fe1\u606f\u6cc4\u9732\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "MessageBus\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "MessageBus MessageBus \u003c3.3.7"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-43840",
  "serverity": "\u4f4e",
  "submitTime": "2021-12-21",
  "title": "MessageBus\u8def\u5f84\u904d\u5386\u6f0f\u6d1e"
}

CVE-2021-43840 (GCVE-0-2021-43840)

Vulnerability from cvelistv5 – Published: 2021-12-17 18:15 – Updated: 2024-08-04 04:10

Title

Path traversal in message_bus

Summary

message_bus is a messaging bus for Ruby processes and web clients. In versions prior to 3.3.7 users who deployed message bus with diagnostics features enabled (default off) are vulnerable to a path traversal bug, which could lead to disclosure of secret information on a machine if an unintended user were to gain access to the diagnostic route. The impact is also greater if there is no proxy for your web application as the number of steps up the directories is not bounded. For deployments which uses a proxy, the impact varies. For example, If a request goes through a proxy like Nginx with `merge_slashes` enabled, the number of steps up the directories that can be read is limited to 3 levels. This issue has been patched in version 3.3.7. Users unable to upgrade should ensure that MessageBus::Diagnostics is disabled.

Severity

4.4 (Medium)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/discourse/message_bus/security…	x_refsource_CONFIRM
https://github.com/discourse/message_bus/commit/9…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
discourse	message_bus	Affected: < 3.3.7

Show details on NVD website

JSON

To clipboard

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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.

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CNVD-2022-06909

CVE-2021-43840 (GCVE-0-2021-43840)

Tags

Sightings

Nomenclature

Related by attack behaviour