Vulnerability-Lookup

CNVD-2021-07238

Vulnerability from cnvd - Published: 2021-01-28

Title

Backblaze信任管理问题漏洞

Description

Backblaze是美国Backblaze公司的一款云端备份服务。 Backblaze for Windows 7.0.1.433之前版本和 Backblaze for macOS 7.0.1.434之前版本存在信任管理问题漏洞，该漏洞源于bztransmit helper中遭受不适当的证书验证，这是由于url中字符串的硬编码白名单被禁用，导致可能通过客户端更新功能远程执行代码。目前没有详细漏洞细节提供。

Severity

高

Patch Name

Backblaze信任管理问题漏洞的补丁

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://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-8289

Impacted products

Name
['Backblaze Backblaze for Windows <7.0.1.433', 'Backblaze Backblaze for macOS <7.0.1.434']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-8289",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-8289"
    }
  },
  "description": "Backblaze\u662f\u7f8e\u56fdBackblaze\u516c\u53f8\u7684\u4e00\u6b3e\u4e91\u7aef\u5907\u4efd\u670d\u52a1\u3002\n\nBackblaze for Windows 7.0.1.433\u4e4b\u524d\u7248\u672c\u548c Backblaze for macOS 7.0.1.434\u4e4b\u524d\u7248\u672c\u5b58\u5728\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ebztransmit helper\u4e2d\u906d\u53d7\u4e0d\u9002\u5f53\u7684\u8bc1\u4e66\u9a8c\u8bc1\uff0c\u8fd9\u662f\u7531\u4e8eurl\u4e2d\u5b57\u7b26\u4e32\u7684\u786c\u7f16\u7801\u767d\u540d\u5355\u88ab\u7981\u7528\uff0c\u5bfc\u81f4\u53ef\u80fd\u901a\u8fc7\u5ba2\u6237\u7aef\u66f4\u65b0\u529f\u80fd\u8fdc\u7a0b\u6267\u884c\u4ee3\u7801\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\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\uff1ahttps://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-07238",
  "openTime": "2021-01-28",
  "patchDescription": "Backblaze\u662f\u7f8e\u56fdBackblaze\u516c\u53f8\u7684\u4e00\u6b3e\u4e91\u7aef\u5907\u4efd\u670d\u52a1\u3002\r\n\r\nBackblaze for Windows 7.0.1.433\u4e4b\u524d\u7248\u672c\u548c Backblaze for macOS 7.0.1.434\u4e4b\u524d\u7248\u672c\u5b58\u5728\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ebztransmit helper\u4e2d\u906d\u53d7\u4e0d\u9002\u5f53\u7684\u8bc1\u4e66\u9a8c\u8bc1\uff0c\u8fd9\u662f\u7531\u4e8eurl\u4e2d\u5b57\u7b26\u4e32\u7684\u786c\u7f16\u7801\u767d\u540d\u5355\u88ab\u7981\u7528\uff0c\u5bfc\u81f4\u53ef\u80fd\u901a\u8fc7\u5ba2\u6237\u7aef\u66f4\u65b0\u529f\u80fd\u8fdc\u7a0b\u6267\u884c\u4ee3\u7801\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\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": "Backblaze\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Backblaze Backblaze for Windows \u003c7.0.1.433",
      "Backblaze Backblaze for macOS \u003c7.0.1.434"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-8289",
  "serverity": "\u9ad8",
  "submitTime": "2021-01-27",
  "title": "Backblaze\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-8289 (GCVE-0-2020-8289)

Vulnerability from cvelistv5 – Published: 2020-12-27 01:20 – Updated: 2024-08-04 09:56

Summary

Backblaze for Windows before 7.0.1.433 and Backblaze for macOS before 7.0.1.434 suffer from improper certificate validation in `bztransmit` helper due to hardcoded whitelist of strings in URLs where validation is disabled leading to possible remote code execution via client update functionality.

Severity ?

No CVSS data available.

CWE

CWE-295 - Improper Certificate Validation (CWE-295)

Assigner

hackerone

References

URL

Tags

	https://hackerone.com/reports/818853	x_refsource_MISC
	https://youtu.be/W0THXbcX5V8	x_refsource_MISC
	https://github.com/geffner/CVE-2020-8289/blob/mas…	x_refsource_MISC
	https://www.backblaze.com/blog/backblaze-cloud-ba…	x_refsource_MISC
	http://seclists.org/fulldisclosure/2020/Dec/57	mailing-listx_refsource_FULLDISC
	http://seclists.org/fulldisclosure/2020/Dec/58	mailing-listx_refsource_FULLDISC

Impacted products

	Vendor	Product	Version
	n/a	Backblaze	Affected: Backblaze for Windows before 7.0.1.433 and Backblaze for macOS before 7.0.1.434

Show details on NVD website

JSON

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  "containers": {
    "adp": [
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T09:56:28.315Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            ],
            "url": "https://hackerone.com/reports/818853"
          },
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            "tags": [
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              "x_transferred"
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            "url": "https://youtu.be/W0THXbcX5V8"
          },
          {
            "tags": [
              "x_refsource_MISC",
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            "url": "https://github.com/geffner/CVE-2020-8289/blob/master/README.md"
          },
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/"
          },
          {
            "name": "20201229 Re: [FD] CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
            "tags": [
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              "x_transferred"
            ],
            "url": "http://seclists.org/fulldisclosure/2020/Dec/57"
          },
          {
            "name": "20201229 Re: CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
            "tags": [
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              "x_transferred"
            ],
            "url": "http://seclists.org/fulldisclosure/2020/Dec/58"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Backblaze",
          "vendor": "n/a",
          "versions": [
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      },
      "references": [
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          "tags": [
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          "url": "https://youtu.be/W0THXbcX5V8"
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          "url": "https://github.com/geffner/CVE-2020-8289/blob/master/README.md"
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          "tags": [
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          "url": "https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/"
        },
        {
          "name": "20201229 Re: [FD] CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
          "tags": [
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          "url": "http://seclists.org/fulldisclosure/2020/Dec/57"
        },
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          "name": "20201229 Re: CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
          "tags": [
            "mailing-list",
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          ],
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      ],
      "x_legacyV4Record": {
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          "ASSIGNER": "support@hackerone.com",
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
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                    {
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                      "version": {
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            {
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              "url": "https://youtu.be/W0THXbcX5V8"
            },
            {
              "name": "https://github.com/geffner/CVE-2020-8289/blob/master/README.md",
              "refsource": "MISC",
              "url": "https://github.com/geffner/CVE-2020-8289/blob/master/README.md"
            },
            {
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              "refsource": "MISC",
              "url": "https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/"
            },
            {
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              "refsource": "FULLDISC",
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            },
            {
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  "cveMetadata": {
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    "dateUpdated": "2024-08-04T09:56:28.315Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CNVD-2021-07238

CVE-2020-8289 (GCVE-0-2020-8289)

Tags

Sightings

Nomenclature