Vulnerability-Lookup

CNVD-2017-32521

Vulnerability from cnvd - Published: 2017-11-02

Title

Cisco IOS和Cisco IOS XE拒绝服务漏洞

Description

Cisco IOS和IOS XE都是美国思科（Cisco）公司为其网络设备开发的操作系统。UDP processing是其中的一个UDP（用户数据报协议）协议处理程序。 Cisco IOS和IOS XE中的UDP processing代码存在拒绝服务漏洞。远程攻击者可通过发送带有终点端口为0的数据包利用该漏洞造成拒绝服务。

Severity

中

Patch Name

Cisco IOS和Cisco IOS XE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-20170906-ios-udp

Reference

https://nvd.nist.gov/vuln/detail/CVE-2017-6627 http://www.securityfocus.com/bid/100644

Impacted products

Name
['Cisco IOS 15.4', 'Cisco IOS 15.1', 'Cisco IOS 15.2', 'Cisco IOS XE >=3.14，<=3.18']

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{
  "bids": {
    "bid": {
      "bidNumber": "100644"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-6627"
    }
  },
  "description": "Cisco IOS\u548cIOS XE\u90fd\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002UDP processing\u662f\u5176\u4e2d\u7684\u4e00\u4e2aUDP\uff08\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae\uff09\u534f\u8bae\u5904\u7406\u7a0b\u5e8f\u3002\r\n\r\nCisco IOS\u548cIOS XE\u4e2d\u7684UDP processing\u4ee3\u7801\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u5e26\u6709\u7ec8\u70b9\u7aef\u53e3\u4e3a0\u7684\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\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-20170906-ios-udp",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-32521",
  "openTime": "2017-11-02",
  "patchDescription": "Cisco IOS\u548cIOS XE\u90fd\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002UDP processing\u662f\u5176\u4e2d\u7684\u4e00\u4e2aUDP\uff08\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae\uff09\u534f\u8bae\u5904\u7406\u7a0b\u5e8f\u3002\r\n\r\nCisco IOS\u548cIOS XE\u4e2d\u7684UDP processing\u4ee3\u7801\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u5e26\u6709\u7ec8\u70b9\u7aef\u53e3\u4e3a0\u7684\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\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\u548cCisco IOS XE\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Cisco IOS 15.4",
      "Cisco IOS  15.1",
      "Cisco IOS  15.2",
      "Cisco IOS XE \u003e=3.14\uff0c\u003c=3.18"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-6627\r\nhttp://www.securityfocus.com/bid/100644",
  "serverity": "\u4e2d",
  "submitTime": "2017-09-08",
  "title": "Cisco IOS\u548cCisco IOS XE\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2017-6627 (GCVE-0-2017-6627)

Vulnerability from cvelistv5 – Published: 2017-09-07 21:00 – Updated: 2025-10-21 23:55

Summary

A vulnerability in the UDP processing code of Cisco IOS 15.1, 15.2, and 15.4 and IOS XE 3.14 through 3.18 could allow an unauthenticated, remote attacker to cause the input queue of an affected system to hold UDP packets, causing an interface queue wedge and a denial of service (DoS) condition. The vulnerability is due to Cisco IOS Software application changes that create UDP sockets and leave the sockets idle without closing them. An attacker could exploit this vulnerability by sending UDP packets with a destination port of 0 to an affected device. A successful exploit could allow the attacker to cause UDP packets to be held in the input interfaces queue, resulting in a DoS condition. The input interface queue will stop holding UDP packets when it receives 250 packets. Cisco Bug IDs: CSCup10024, CSCva55744, CSCva95506.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/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 2025-02-04 15:23 UTC

CWE

CWE-399

Assigner

cisco mitre root

References

4 references

URL	Tags
http://www.securityfocus.com/bid/100644	vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1039289	vdb-entryx_refsource_SECTRACK
https://tools.cisco.com/security/center/content/C…	x_refsource_CONFIRM
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

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

Date Public

2017-09-07 00:00

Show details on NVD website

JSON

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          },
          {
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            ],
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        ],
        "title": "CVE Program Container"
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        "metrics": [
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              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2017-6627",
                "options": [
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                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
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                  }
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            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2022-03-03",
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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.

Detection rules are retrieved from Rulezet.

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.

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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.

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CNVD-2017-32521

CVE-2017-6627 (GCVE-0-2017-6627)

Tags

Sightings

Nomenclature

Related by attack behaviour