Vulnerability-Lookup

CNVD-2021-91277

Vulnerability from cnvd - Published: 2021-11-25

Title

Barrier资源管理错误漏洞

Description

Barrier是一种模仿Kvm切换器功能的软件。 Barrier存在安全漏洞，该漏洞源于在2.3.4之前的Barrier同时为每个TCP会话发送Hello消息，攻击者可通过该漏洞导致Barrier组件(也就是Barrier的服务器端实现)的分段错误。

Severity

中

Patch Name

Barrier资源管理错误漏洞的补丁

Patch Description

Barrier是一种模仿Kvm切换器功能的软件。 Barrier存在安全漏洞，该漏洞源于在2.3.4之前的Barrier同时为每个TCP会话发送Hello消息，攻击者可通过该漏洞导致Barrier组件(也就是Barrier的服务器端实现)的分段错误。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，详情请关注厂商主页： http://www.openwall.com/lists/oss-security/2021/11/02/4

Reference

http://www.openwall.com/lists/oss-security/2021/11/02/4, https://github.com/debauchee/barrier/releases/tag/v2.3.4

Impacted products

Name
Barrier Barrier <2.3.4

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-42074",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-42074"
    }
  },
  "description": "Barrier\u662f\u4e00\u79cd\u6a21\u4effKvm\u5207\u6362\u5668\u529f\u80fd\u7684\u8f6f\u4ef6\u3002 \n\nBarrier\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u57282.3.4\u4e4b\u524d\u7684Barrier\u540c\u65f6\u4e3a\u6bcf\u4e2aTCP\u4f1a\u8bdd\u53d1\u9001Hello\u6d88\u606f\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u8be5\u6f0f\u6d1e\u5bfc\u81f4Barrier\u7ec4\u4ef6(\u4e5f\u5c31\u662fBarrier\u7684\u670d\u52a1\u5668\u7aef\u5b9e\u73b0)\u7684\u5206\u6bb5\u9519\u8bef\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a \r\nhttp://www.openwall.com/lists/oss-security/2021/11/02/4",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-91277",
  "openTime": "2021-11-25",
  "patchDescription": "Barrier\u662f\u4e00\u79cd\u6a21\u4effKvm\u5207\u6362\u5668\u529f\u80fd\u7684\u8f6f\u4ef6\u3002 \r\n\r\nBarrier\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u57282.3.4\u4e4b\u524d\u7684Barrier\u540c\u65f6\u4e3a\u6bcf\u4e2aTCP\u4f1a\u8bdd\u53d1\u9001Hello\u6d88\u606f\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u8be5\u6f0f\u6d1e\u5bfc\u81f4Barrier\u7ec4\u4ef6(\u4e5f\u5c31\u662fBarrier\u7684\u670d\u52a1\u5668\u7aef\u5b9e\u73b0)\u7684\u5206\u6bb5\u9519\u8bef\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": "Barrier\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Barrier Barrier \u003c2.3.4"
  },
  "referenceLink": "http://www.openwall.com/lists/oss-security/2021/11/02/4, https://github.com/debauchee/barrier/releases/tag/v2.3.4",
  "serverity": "\u4e2d",
  "submitTime": "2021-11-24",
  "title": "Barrier\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-42074 (GCVE-0-2021-42074)

Vulnerability from cvelistv5 – Published: 2021-11-08 03:52 – Updated: 2024-08-04 03:22

Summary

An issue was discovered in Barrier before 2.3.4. An unauthenticated attacker can cause a segmentation fault in the barriers component (aka the server-side implementation of Barrier) by quickly opening and closing TCP connections while sending a Hello message for each TCP session.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
http://www.openwall.com/lists/oss-security/2021/11/02/4	mailing-listx_refsource_MLIST
https://github.com/debauchee/barrier/releases/tag…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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          },
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              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/debauchee/barrier/releases/tag/v2.3.4"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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      "descriptions": [
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      ],
      "providerMetadata": {
        "dateUpdated": "2021-11-08T03:52:01.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      },
      "references": [
        {
          "name": "[oss-security] 20211102 Barrier \"software KVM switch\" multiple remote security issues",
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        },
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/debauchee/barrier/releases/tag/v2.3.4"
        }
      ],
      "x_legacyV4Record": {
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          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-42074",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
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                  "product_data": [
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        "description": {
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  "cveMetadata": {
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    "dateReserved": "2021-10-07T00:00:00.000Z",
    "dateUpdated": "2024-08-04T03:22:25.990Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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CNVD-2021-91277

CVE-2021-42074 (GCVE-0-2021-42074)

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