Vulnerability-Lookup

CNVD-2017-14885

Vulnerability from cnvd - Published: 2017-07-17

Title

OpenVPN服务器端拒绝服务漏洞

Description

OpenVPN是美国OpenVPN公司的一个用于创建虚拟专用网络（VPN）加密通道的软件包，它使用OpenSSL库来加密数据与控制信息，并允许创建的VPN使用公开密钥、电子证书或者用户名/密码来进行身份验证。 OpenVPN 2.4.3之前的版本和2.3.17版本中存在拒绝服务漏洞。远程攻击者可利用该漏洞造成拒绝服务（内存耗尽）。

Severity

中

Patch Name

OpenVPN服务器端拒绝服务漏洞的补丁

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://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243

Reference

https://threatpost.com/openvpn-patches-critical-remote-code-execution-vulnerability/126425/ http://www.securityfocus.com/bid/99230

Impacted products

Name
['OpenVPN Openvpn <2.4.3', 'OpenVPN Openvpn 2.3.17']

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "99230"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-7521"
    }
  },
  "description": "OpenVPN\u662f\u7f8e\u56fdOpenVPN\u516c\u53f8\u7684\u4e00\u4e2a\u7528\u4e8e\u521b\u5efa\u865a\u62df\u4e13\u7528\u7f51\u7edc\uff08VPN\uff09\u52a0\u5bc6\u901a\u9053\u7684\u8f6f\u4ef6\u5305\uff0c\u5b83\u4f7f\u7528OpenSSL\u5e93\u6765\u52a0\u5bc6\u6570\u636e\u4e0e\u63a7\u5236\u4fe1\u606f\uff0c\u5e76\u5141\u8bb8\u521b\u5efa\u7684VPN\u4f7f\u7528\u516c\u5f00\u5bc6\u94a5\u3001\u7535\u5b50\u8bc1\u4e66\u6216\u8005\u7528\u6237\u540d/\u5bc6\u7801\u6765\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u3002\r\n\r\nOpenVPN 2.4.3\u4e4b\u524d\u7684\u7248\u672c\u548c2.3.17\u7248\u672c\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5185\u5b58\u8017\u5c3d\uff09\u3002",
  "discovererName": "Guido Vranken",
  "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://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-14885",
  "openTime": "2017-07-17",
  "patchDescription": "OpenVPN\u662f\u7f8e\u56fdOpenVPN\u516c\u53f8\u7684\u4e00\u4e2a\u7528\u4e8e\u521b\u5efa\u865a\u62df\u4e13\u7528\u7f51\u7edc\uff08VPN\uff09\u52a0\u5bc6\u901a\u9053\u7684\u8f6f\u4ef6\u5305\uff0c\u5b83\u4f7f\u7528OpenSSL\u5e93\u6765\u52a0\u5bc6\u6570\u636e\u4e0e\u63a7\u5236\u4fe1\u606f\uff0c\u5e76\u5141\u8bb8\u521b\u5efa\u7684VPN\u4f7f\u7528\u516c\u5f00\u5bc6\u94a5\u3001\u7535\u5b50\u8bc1\u4e66\u6216\u8005\u7528\u6237\u540d/\u5bc6\u7801\u6765\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u3002\r\n\r\nOpenVPN 2.4.3\u4e4b\u524d\u7684\u7248\u672c\u548c2.3.17\u7248\u672c\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5185\u5b58\u8017\u5c3d\uff09\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": "OpenVPN\u670d\u52a1\u5668\u7aef\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "OpenVPN Openvpn \u003c2.4.3",
      "OpenVPN Openvpn 2.3.17"
    ]
  },
  "referenceLink": "https://threatpost.com/openvpn-patches-critical-remote-code-execution-vulnerability/126425/\r\nhttp://www.securityfocus.com/bid/99230",
  "serverity": "\u4e2d",
  "submitTime": "2017-06-22",
  "title": "OpenVPN\u670d\u52a1\u5668\u7aef\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2017-7521 (GCVE-0-2017-7521)

Vulnerability from cvelistv5 – Published: 2017-06-27 13:00 – Updated: 2024-08-05 16:04

Summary

OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().

Severity

No CVSS data available.

CWE

CWE-400

Assigner

redhat redhat root

References

4 references

URL	Tags
https://community.openvpn.net/openvpn/wiki/Vulner…	x_refsource_CONFIRM
http://www.securitytracker.com/id/1038768	vdb-entryx_refsource_SECTRACK
http://www.securityfocus.com/bid/99230	vdb-entryx_refsource_BID
http://www.debian.org/security/2017/dsa-3900	vendor-advisoryx_refsource_DEBIAN

Impacted products

1 product

Vendor	Product	Version
OpenVPN Technologies, Inc	OpenVPN	Affected: before 2.4.3 Affected: before 2.3.17

Date Public

2017-06-21 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T16:04:11.856Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243"
          },
          {
            "name": "1038768",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1038768"
          },
          {
            "name": "99230",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/99230"
          },
          {
            "name": "DSA-3900",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "http://www.debian.org/security/2017/dsa-3900"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "OpenVPN",
          "vendor": "OpenVPN Technologies, Inc",
          "versions": [
            {
              "status": "affected",
              "version": "before 2.4.3"
            },
            {
              "status": "affected",
              "version": "before 2.3.17"
            }
          ]
        }
      ],
      "datePublic": "2017-06-21T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension()."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2017-11-03T18:57:01.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243"
        },
        {
          "name": "1038768",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1038768"
        },
        {
          "name": "99230",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/99230"
        },
        {
          "name": "DSA-3900",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "http://www.debian.org/security/2017/dsa-3900"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2017-7521",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "OpenVPN",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "before 2.4.3"
                          },
                          {
                            "version_value": "before 2.3.17"
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                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "OpenVPN Technologies, Inc"
              }
            ]
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        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "value": "OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension()."
            }
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        "problemtype": {
          "problemtype_data": [
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              "description": [
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                  "value": "CWE-400"
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243",
              "refsource": "CONFIRM",
              "url": "https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243"
            },
            {
              "name": "1038768",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1038768"
            },
            {
              "name": "99230",
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              "url": "http://www.securityfocus.com/bid/99230"
            },
            {
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              "refsource": "DEBIAN",
              "url": "http://www.debian.org/security/2017/dsa-3900"
            }
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  "cveMetadata": {
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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.

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.

Action not permitted

CNVD-2017-14885

CVE-2017-7521 (GCVE-0-2017-7521)

Tags

Sightings

Nomenclature

Related by attack behaviour