cnvd - cnvd-2020-03750

cnvd-2020-03750

Vulnerability from cnvd

Title: ISC Kea DHCP输入验证错误漏洞

Description:

ISC Kea DHCP是美国ISC公司的一款开源的DHCP（动态主机配置协议）服务器。

ISC Kea DHCP 1.4.0版本至1.5.0版本、1.6.0-beta1版本和1.6.0-beta2版本中存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。

Severity: 高

Patch Name: ISC Kea DHCP输入验证错误漏洞的补丁

Patch Description:

ISC Kea DHCP是美国ISC公司的一款开源的DHCP（动态主机配置协议）服务器。

ISC Kea DHCP 1.4.0版本至1.5.0版本、1.6.0-beta1版本和1.6.0-beta2版本中存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

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://kb.isc.org/docs/cve-2019-6474

Reference: https://vigilance.fr/vulnerability/Kea-DHCP-three-vulnerabilities-30273

Impacted products

Name
['ISC ISC Kea DHCP >=1.4.0，<=1.5.0', 'ISC ISC Kea DHCP 1.6.0-beta1', 'ISC ISC Kea DHCP 1.6.0-beta2']

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-6474",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-6474"
    }
  },
  "description": "ISC Kea DHCP\u662f\u7f8e\u56fdISC\u516c\u53f8\u7684\u4e00\u6b3e\u5f00\u6e90\u7684DHCP\uff08\u52a8\u6001\u4e3b\u673a\u914d\u7f6e\u534f\u8bae\uff09\u670d\u52a1\u5668\u3002\n\nISC Kea DHCP 1.4.0\u7248\u672c\u81f31.5.0\u7248\u672c\u30011.6.0-beta1\u7248\u672c\u548c1.6.0-beta2\u7248\u672c\u4e2d\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u672a\u5bf9\u8f93\u5165\u7684\u6570\u636e\u8fdb\u884c\u6b63\u786e\u7684\u9a8c\u8bc1\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\uff1a\r\nhttps://kb.isc.org/docs/cve-2019-6474",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-03750",
  "openTime": "2020-02-05",
  "patchDescription": "ISC Kea DHCP\u662f\u7f8e\u56fdISC\u516c\u53f8\u7684\u4e00\u6b3e\u5f00\u6e90\u7684DHCP\uff08\u52a8\u6001\u4e3b\u673a\u914d\u7f6e\u534f\u8bae\uff09\u670d\u52a1\u5668\u3002\r\n\r\nISC Kea DHCP 1.4.0\u7248\u672c\u81f31.5.0\u7248\u672c\u30011.6.0-beta1\u7248\u672c\u548c1.6.0-beta2\u7248\u672c\u4e2d\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u672a\u5bf9\u8f93\u5165\u7684\u6570\u636e\u8fdb\u884c\u6b63\u786e\u7684\u9a8c\u8bc1\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": "ISC Kea DHCP\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "ISC ISC Kea DHCP \u003e=1.4.0\uff0c\u003c=1.5.0",
      "ISC ISC Kea DHCP 1.6.0-beta1",
      "ISC ISC Kea DHCP 1.6.0-beta2"
    ]
  },
  "referenceLink": "https://vigilance.fr/vulnerability/Kea-DHCP-three-vulnerabilities-30273",
  "serverity": "\u9ad8",
  "submitTime": "2019-12-19",
  "title": "ISC Kea DHCP\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2019-6474 (GCVE-0-2019-6474)

Vulnerability from cvelistv5

Published

2019-10-16 17:22

Modified

2024-09-16 22:19

Severity ?

5.7 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE

Only Kea servers which use memfile storage for leases are affected by this vulnerability. An attacker can exploit the missing check to deliberately create a situation where the server will not restart properly should it stop for any reason.

Summary

A missing check on incoming client requests can be exploited to cause a situation where the Kea server's lease storage contains leases which are rejected as invalid when the server tries to load leases from storage on restart. If the number of such leases exceeds a hard-coded limit in the Kea code, a server trying to restart will conclude that there is a problem with its lease store and give up. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2

References

▼	URL	Tags
	https://kb.isc.org/docs/cve-2019-6474	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	ISC	Kea	Version: 1.4.0 to 1.5.0 Version: 1.6.0-beta1 Version: 1.6.0-beta2

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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