cnvd - cnvd-2021-95637

cnvd-2021-95637

Vulnerability from cnvd

Title: Barrier缓冲区溢出漏洞

Description:

Barrier是一种模仿 Kvm 切换器功能的软件。

Barrier存在缓冲区溢出漏洞，攻击者可利用该漏洞发送长TCP消息导致Barrier组件和barrierc的内存耗尽。

Severity: 中

Patch Name: Barrier缓冲区溢出漏洞的补丁

Patch Description:

Barrier是一种模仿 Kvm 切换器功能的软件。

Barrier存在缓冲区溢出漏洞，攻击者可利用该漏洞发送长TCP消息导致Barrier组件和barrierc的内存耗尽。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://www.openwall.com/lists/oss-security/2021/11/02/4

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-42076

Impacted products

Name
Barrier Barrier <2.3.4

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-42076",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-42076"
    }
  },
  "description": "Barrier\u662f\u4e00\u79cd\u6a21\u4eff Kvm \u5207\u6362\u5668\u529f\u80fd\u7684\u8f6f\u4ef6\u3002\n\nBarrier\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53d1\u9001\u957fTCP\u6d88\u606f\u5bfc\u81f4Barrier\u7ec4\u4ef6\u548cbarrierc\u7684\u5185\u5b58\u8017\u5c3d\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://www.openwall.com/lists/oss-security/2021/11/02/4",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-95637",
  "openTime": "2021-12-09",
  "patchDescription": "Barrier\u662f\u4e00\u79cd\u6a21\u4eff Kvm \u5207\u6362\u5668\u529f\u80fd\u7684\u8f6f\u4ef6\u3002\r\n\r\nBarrier\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53d1\u9001\u957fTCP\u6d88\u606f\u5bfc\u81f4Barrier\u7ec4\u4ef6\u548cbarrierc\u7684\u5185\u5b58\u8017\u5c3d\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\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Barrier Barrier \u003c2.3.4"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-42076",
  "serverity": "\u4e2d",
  "submitTime": "2021-11-08",
  "title": "Barrier\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-42076 (GCVE-0-2021-42076)

Vulnerability from cvelistv5

Published

2021-11-08 03:56

Modified

2024-08-04 03:22

Severity ?

CWE

Summary

An issue was discovered in Barrier before 2.3.4. An attacker can cause memory exhaustion in the barriers component (aka the server-side implementation of Barrier) and barrierc by sending long TCP messages.

References

▼	URL	Tags
	http://www.openwall.com/lists/oss-security/2021/11/02/4	mailing-list, x_refsource_MLIST
	https://github.com/debauchee/barrier/releases/tag/v2.3.4	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

{
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:22:25.919Z",
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            "tags": [
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              "x_refsource_MLIST",
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            ],
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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": {
      "affected": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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            }
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        }
      ],
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      "problemTypes": [
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          "descriptions": [
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              "lang": "en",
              "type": "text"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2021-11-08T03:56:33",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "[oss-security] 20211102 Barrier \"software KVM switch\" multiple remote security issues",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/11/02/4"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/debauchee/barrier/releases/tag/v2.3.4"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-42076",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
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                      "product_name": "n/a",
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        },
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        "data_version": "4.0",
        "description": {
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              "value": "An issue was discovered in Barrier before 2.3.4. An attacker can cause memory exhaustion in the barriers component (aka the server-side implementation of Barrier) and barrierc by sending long TCP messages."
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              "description": [
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            },
            {
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              "url": "https://github.com/debauchee/barrier/releases/tag/v2.3.4"
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  "cveMetadata": {
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    "dateReserved": "2021-10-07T00:00:00",
    "dateUpdated": "2024-08-04T03:22:25.919Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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