cnvd - cnvd-2019-14707

CNVD-2019-14707

Vulnerability from cnvd - Published: 2019-05-17

Title

Cisco Small Business 300 Series Managed Switches拒绝服务漏洞

Description

Cisco Small Business 300 Series Managed Switches是美国思科（Cisco）公司的一款交换机设备。 Cisco Small Business 300 Series Managed Switches拒绝服务漏洞，该漏洞源于在收到意外的DHCP请求时未能释放系统内存，攻击者可通过向目标设备发送精心设计的DHCP数据包利用该漏洞导致设备意外重新加载。

Severity

中

Patch Name

Cisco Small Business 300 Series Managed Switches拒绝服务漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb300sms-dhcp

Reference

https://web.nvd.nist.gov//vuln/detail/CVE-2019-1814

Impacted products

Name
['Cisco Small Business 300 Series Managed Switches 1.4.9.0', 'Cisco Small Business 300 Series Managed Switches 1.4.0.88']

Show details on source website

JSON

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{
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    "cve": {
      "cveNumber": "CVE-2019-1814",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1814"
    }
  },
  "description": "Cisco Small Business 300 Series Managed Switches\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u4ea4\u6362\u673a\u8bbe\u5907\u3002 \n\nCisco Small Business 300 Series Managed Switches\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u6536\u5230\u610f\u5916\u7684DHCP\u8bf7\u6c42\u65f6\u672a\u80fd\u91ca\u653e\u7cfb\u7edf\u5185\u5b58\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411\u76ee\u6807\u8bbe\u5907\u53d1\u9001\u7cbe\u5fc3\u8bbe\u8ba1\u7684DHCP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8bbe\u5907\u610f\u5916\u91cd\u65b0\u52a0\u8f7d\u3002",
  "discovererName": "Daniel O\u0027Connor",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb300sms-dhcp",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-14707",
  "openTime": "2019-05-17",
  "patchDescription": "Cisco Small Business 300 Series Managed Switches\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u4ea4\u6362\u673a\u8bbe\u5907\u3002 \r\n\r\nCisco Small Business 300 Series Managed Switches\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u6536\u5230\u610f\u5916\u7684DHCP\u8bf7\u6c42\u65f6\u672a\u80fd\u91ca\u653e\u7cfb\u7edf\u5185\u5b58\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411\u76ee\u6807\u8bbe\u5907\u53d1\u9001\u7cbe\u5fc3\u8bbe\u8ba1\u7684DHCP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8bbe\u5907\u610f\u5916\u91cd\u65b0\u52a0\u8f7d\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 Small Business 300 Series Managed Switches\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Cisco Small Business 300 Series Managed Switches 1.4.9.0",
      "Cisco Small Business 300 Series Managed Switches 1.4.0.88"
    ]
  },
  "referenceLink": "https://web.nvd.nist.gov//vuln/detail/CVE-2019-1814",
  "serverity": "\u4e2d",
  "submitTime": "2019-05-15",
  "title": "Cisco Small Business 300 Series Managed Switches\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2019-1814 (GCVE-0-2019-1814)

Vulnerability from cvelistv5 – Published: 2019-05-15 23:45 – Updated: 2024-11-21 19:25

Title

Cisco Small Business 300 Series Managed Switches DHCP Denial of Service Vulnerability

Summary

A vulnerability in the interactions between the DHCP and TFTP features for Cisco Small Business 300 Series (Sx300) Managed Switches could allow an unauthenticated, remote attacker to cause the device to become low on system memory, which in turn could lead to an unexpected reload of the device and result in a denial of service (DoS) condition on an affected device. The vulnerability is due to a failure to free system memory when an unexpected DHCP request is received. An attacker could exploit this vulnerability by sending a crafted DHCP packet to the targeted device. A successful exploit could allow the attacker to cause an unexpected reload of the device.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-400

Assigner

cisco

References

URL

Tags

	https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
	http://www.securityfocus.com/bid/108344	vdb-entryx_refsource_BID

Impacted products

	Vendor	Product	Version
	Cisco	Cisco Small Business 300 Series Managed Switches	Affected: 1.4.0.88

Show details on NVD website

JSON

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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-2019-14707

CVE-2019-1814 (GCVE-0-2019-1814)

Tags

Sightings

Nomenclature