cnvd - cnvd-2022-87601

cnvd-2022-87601

Vulnerability from cnvd

Title: ISC DHCP缓冲区溢出漏洞

Description:

ISC DHCP是美国ISC公司的一套开源的动态主机配置协议服务器软件。

ISC DHCP存在缓冲区溢出漏洞，该漏洞源于DHCP服务器的系统对于fqdn标签的DHCP数据包的长度缺乏验证，攻击者可利用漏洞发起拒绝服务攻击。

Severity: 中

Patch Name: ISC DHCP缓冲区溢出漏洞的补丁

Patch Description:

ISC DHCP是美国ISC公司的一套开源的动态主机配置协议服务器软件。

ISC DHCP存在缓冲区溢出漏洞，该漏洞源于DHCP服务器的系统对于fqdn标签的DHCP数据包的长度缺乏验证，攻击者可利用漏洞发起拒绝服务攻击。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://github.com/isc-projects/dhcp/releases/tag/v4_4_2b1_f2

Reference: https://kb.isc.org/docs/cve-2022-2929

Impacted products

Name
['ISC ISC DHCP >1.0，<=4.4.3', 'ISC ISC DHCP >4.1-ESV-R1，<=4.1-ESV-R16-P1']

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-2929",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2022-2929"
    }
  },
  "description": "ISC DHCP\u662f\u7f8e\u56fdISC\u516c\u53f8\u7684\u4e00\u5957\u5f00\u6e90\u7684\u52a8\u6001\u4e3b\u673a\u914d\u7f6e\u534f\u8bae\u670d\u52a1\u5668\u8f6f\u4ef6\u3002\n\nISC DHCP\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eDHCP\u670d\u52a1\u5668\u7684\u7cfb\u7edf\u5bf9\u4e8efqdn\u6807\u7b7e\u7684DHCP\u6570\u636e\u5305\u7684\u957f\u5ea6\u7f3a\u4e4f\u9a8c\u8bc1\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u53d1\u8d77\u62d2\u7edd\u670d\u52a1\u653b\u51fb\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://github.com/isc-projects/dhcp/releases/tag/v4_4_2b1_f2",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-87601",
  "openTime": "2022-12-14",
  "patchDescription": "ISC DHCP\u662f\u7f8e\u56fdISC\u516c\u53f8\u7684\u4e00\u5957\u5f00\u6e90\u7684\u52a8\u6001\u4e3b\u673a\u914d\u7f6e\u534f\u8bae\u670d\u52a1\u5668\u8f6f\u4ef6\u3002\r\n\r\nISC DHCP\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eDHCP\u670d\u52a1\u5668\u7684\u7cfb\u7edf\u5bf9\u4e8efqdn\u6807\u7b7e\u7684DHCP\u6570\u636e\u5305\u7684\u957f\u5ea6\u7f3a\u4e4f\u9a8c\u8bc1\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u53d1\u8d77\u62d2\u7edd\u670d\u52a1\u653b\u51fb\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 DHCP\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "ISC ISC DHCP \u003e1.0\uff0c\u003c=4.4.3",
      "ISC ISC DHCP \u003e4.1-ESV-R1\uff0c\u003c=4.1-ESV-R16-P1"
    ]
  },
  "referenceLink": "https://kb.isc.org/docs/cve-2022-2929",
  "serverity": "\u4e2d",
  "submitTime": "2022-10-11",
  "title": "ISC DHCP\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2022-2929 (GCVE-0-2022-2929)

Vulnerability from cvelistv5

Published

2022-10-07 04:45

Modified

2024-09-16 18:28

Severity ?

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

CWE

The function fqdn_universe_decode() allocates buffer space for the contents of option 81 (fqdn) data received in a DHCP packet. The maximum length of a DNS label is 63 bytes. The function tests the length byte of each label contained in the fqdn; if it finds a label whose length byte value is larger than 63, it returns without dereferencing the buffer space. This will cause a memory leak. Affects In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1

Summary

In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory.

References

▼	URL	Tags
	https://kb.isc.org/docs/cve-2022-2929
	https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html	mailing-list
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/	vendor-advisory
	https://security.gentoo.org/glsa/202305-22	vendor-advisory

Impacted products

	Vendor	Product	Version
	ISC	ISC DHCP	Version: 1.0 through versions before 4.1-ESV-R16-P2 Version: 4.2 through versions before 4.4.3.-P1

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T00:52:59.819Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://kb.isc.org/docs/cve-2022-2929"
          },
          {
            "name": "[debian-lts-announce] 20221010 [SECURITY] [DLA 3146-1] isc-dhcp security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html"
          },
          {
            "name": "FEDORA-2022-f5a45757df",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/"
          },
          {
            "name": "FEDORA-2022-9ca9a94e28",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/"
          },
          {
            "name": "FEDORA-2022-c4f274a54f",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/"
          },
          {
            "name": "GLSA-202305-22",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202305-22"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ISC DHCP",
          "vendor": "ISC",
          "versions": [
            {
              "status": "affected",
              "version": "1.0 through versions before 4.1-ESV-R16-P2"
            },
            {
              "status": "affected",
              "version": "4.2 through versions before 4.4.3.-P1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "ISC would like to thank VictorV of Cyber Kunlun Lab for discovering and reporting this issue."
        }
      ],
      "datePublic": "2022-10-05T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "In ISC DHCP 1.0 -\u003e 4.4.3, ISC DHCP 4.1-ESV-R1 -\u003e 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "We are not aware of any active exploits."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "The function fqdn_universe_decode() allocates buffer space for the contents of option 81 (fqdn) data received in a DHCP packet. The maximum length of a DNS label is 63 bytes. The function tests the length byte of each label contained in the fqdn; if it finds a label whose length byte value is larger than 63, it returns without dereferencing the buffer space. This will cause a memory leak. Affects In ISC DHCP 1.0 -\u003e 4.4.3, ISC DHCP 4.1-ESV-R1 -\u003e 4.1-ESV-R16-P1",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-05-03T00:00:00",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "shortName": "isc"
      },
      "references": [
        {
          "url": "https://kb.isc.org/docs/cve-2022-2929"
        },
        {
          "name": "[debian-lts-announce] 20221010 [SECURITY] [DLA 3146-1] isc-dhcp security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html"
        },
        {
          "name": "FEDORA-2022-f5a45757df",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/"
        },
        {
          "name": "FEDORA-2022-9ca9a94e28",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/"
        },
        {
          "name": "FEDORA-2022-c4f274a54f",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/"
        },
        {
          "name": "GLSA-202305-22",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202305-22"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to the patched release most closely related to your current version of ISC DHCP. These can all be downloaded from https://www.isc.org/downloads.  4.4.3-P1 4.1-ESV-R16-P2"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "DHCP memory leak",
      "workarounds": [
        {
          "lang": "en",
          "value": "As exploiting this vulnerability requires an attacker to send packets for an extended period of time, restarting servers periodically could be a viable workaround."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2022-2929",
    "datePublished": "2022-10-07T04:45:12.836741Z",
    "dateReserved": "2022-08-22T00:00:00",
    "dateUpdated": "2024-09-16T18:28:37.665Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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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