Vulnerability-Lookup

CNVD-2017-33747

Vulnerability from cnvd - Published: 2017-11-13

Title

Cisco IOS XE Software Ethernet Virtual Private Network拒绝服务漏洞

Description

Cisco IOS XE Software是美国思科（Cisco）公司为其网络设备开发的一套操作系统。Ethernet Virtual Private Network（EVPN）是其中的一个以太网虚拟专用网络系统。Border Gateway Protocol（BGP）是其中的一个边界网关协议。 Cisco IOS XE Software 16.3之前的版本中EVPN的BGP存在拒绝服务漏洞。远程攻击者可通过在BGP会话建立之后，向受影响的设备发送特制的数据包利用该漏洞造成拒绝服务（设备重新加载或BGP路由表损坏）。

Severity

中

Patch Name

Cisco IOS XE Software Ethernet Virtual Private Network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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171103-bgp

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171103-bgp

Impacted products

Name
Cisco IOS XE Software <16.3

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2017-12319"
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  "description": "Cisco IOS XE Software\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u4e00\u5957\u64cd\u4f5c\u7cfb\u7edf\u3002Ethernet Virtual Private Network\uff08EVPN\uff09\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u4ee5\u592a\u7f51\u865a\u62df\u4e13\u7528\u7f51\u7edc\u7cfb\u7edf\u3002Border Gateway Protocol\uff08BGP\uff09\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u8fb9\u754c\u7f51\u5173\u534f\u8bae\u3002\r\n\r\nCisco IOS XE Software 16.3\u4e4b\u524d\u7684\u7248\u672c\u4e2dEVPN\u7684BGP\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728BGP\u4f1a\u8bdd\u5efa\u7acb\u4e4b\u540e\uff0c\u5411\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u53d1\u9001\u7279\u5236\u7684\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u8bbe\u5907\u91cd\u65b0\u52a0\u8f7d\u6216BGP\u8def\u7531\u8868\u635f\u574f\uff09\u3002",
  "discovererName": "Cisco",
  "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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171103-bgp",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-33747",
  "openTime": "2017-11-13",
  "patchDescription": "Cisco IOS XE Software\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u4e00\u5957\u64cd\u4f5c\u7cfb\u7edf\u3002Ethernet Virtual Private Network\uff08EVPN\uff09\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u4ee5\u592a\u7f51\u865a\u62df\u4e13\u7528\u7f51\u7edc\u7cfb\u7edf\u3002Border Gateway Protocol\uff08BGP\uff09\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u8fb9\u754c\u7f51\u5173\u534f\u8bae\u3002\r\n\r\nCisco IOS XE Software 16.3\u4e4b\u524d\u7684\u7248\u672c\u4e2dEVPN\u7684BGP\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728BGP\u4f1a\u8bdd\u5efa\u7acb\u4e4b\u540e\uff0c\u5411\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u53d1\u9001\u7279\u5236\u7684\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u8bbe\u5907\u91cd\u65b0\u52a0\u8f7d\u6216BGP\u8def\u7531\u8868\u635f\u574f\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": "Cisco IOS XE Software Ethernet Virtual Private Network\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco IOS XE Software \u003c16.3"
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  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171103-bgp",
  "serverity": "\u4e2d",
  "submitTime": "2017-11-06",
  "title": "Cisco IOS XE Software Ethernet Virtual Private Network\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2017-12319 (GCVE-0-2017-12319)

Vulnerability from cvelistv5 – Published: 2018-03-27 09:00 – Updated: 2026-01-12 21:47

Summary

A vulnerability in the Border Gateway Protocol (BGP) over an Ethernet Virtual Private Network (EVPN) for Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a denial of service (DoS) condition, or potentially corrupt the BGP routing table, which could result in network instability. The vulnerability exists due to changes in the implementation of the BGP MPLS-Based Ethernet VPN RFC (RFC 7432) draft between IOS XE software releases. When the BGP Inclusive Multicast Ethernet Tag Route or BGP EVPN MAC/IP Advertisement Route update packet is received, it could be possible that the IP address length field is miscalculated. An attacker could exploit this vulnerability by sending a crafted BGP packet to an affected device after the BGP session was established. An exploit could allow the attacker to cause the affected device to reload or corrupt the BGP routing table; either outcome would result in a DoS. The vulnerability may be triggered when the router receives a crafted BGP message from a peer on an existing BGP session. This vulnerability affects all releases of Cisco IOS XE Software prior to software release 16.3 that support BGP EVPN configurations. If the device is not configured for EVPN, it is not vulnerable. Cisco Bug IDs: CSCui67191, CSCvg52875.

Severity

5.9 (Medium)


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

SSVC

Exploitation: active Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-08 17:31 UTC

CWE

CWE-20

Assigner

cisco mitre root

References

3 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	x_refsource_CONFIRM
http://www.securityfocus.com/bid/101676	vdb-entryx_refsource_BID
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
n/a	Cisco IOS XE	Affected: Cisco IOS XE

Date Public

2018-03-27 00:00

Show details on NVD website

JSON

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  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T18:36:55.657Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171103-bgp"
          },
          {
            "name": "101676",
            "tags": [
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              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/101676"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 5.9,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2017-12319",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-08T17:31:35.276199Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2022-03-03",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-12319"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-12T21:47:59.350Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        "references": [
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          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "versions": [
            {
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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-2017-33747

CVE-2017-12319 (GCVE-0-2017-12319)

Tags

Sightings

Nomenclature

Related by attack behaviour