Vulnerability-Lookup

CNVD-2022-87943

Vulnerability from cnvd - Published: 2022-12-14

Title

ISC DHCP拒绝服务漏洞

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存在拒绝服务漏洞，该漏洞源于当从add_option()调用函数option_code_hash_lookup()时，它会增加选项的refcount字段，但是未对option_dereference()的相应调用来减少refcount字段，函数add_option()仅用于服务器对租约查询数据包的响应，每个租约查询响应都会为多个选项调用此函数，攻击者可利用漏洞触发引用计数器溢出，导致拒绝服务。

Severity

中

Patch Name

ISC DHCP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://github.com/isc-projects/dhcp/releases/tag/v4_4_2b1_f2

Reference

https://kb.isc.org/docs/cve-2022-2928

Impacted products

Name
['ISC DHCP >=4.4.0，<=4.4.3', 'ISC DHCP 4.1-esv r1', 'ISC DHCP 4.1-esv r10', 'ISC DHCP 4.1-esv r10_b1', 'ISC DHCP 4.1-esv r10_rc1', 'ISC DHCP 4.1-esv r10b1', 'ISC DHCP 4.1-esv r10rc1', 'ISC DHCP 4.1-esv r11', 'ISC DHCP 4.1-esv r11_b1', 'ISC DHCP 4.1-esv r11_rc1', 'ISC DHCP 4.1-esv r11_rc2', 'ISC DHCP 4.1-esv r11b1', 'ISC DHCP 4.1-esv r11rc1', 'ISC DHCP 4.1-esv r11rc', 'ISC DHCP 4.1-esv r12', 'ISC DHCP 4.1-esv r12-p1', 'ISC DHCP 4.1-esv r12_b1', 'ISC DHCP 4.1-esv r12_p1', 'ISC DHCP 4.1-esv r12b1', 'ISC DHCP 4.1-esv r13', 'ISC DHCP 4.1-esv r13_b1', 'ISC DHCP 4.1-esv r13b1', 'ISC DHCP 4.1-esv r14', 'ISC DHCP 4.1-esvr14_b1', 'ISC DHCP 4.1-esv r14b1', 'ISC DHCP 4.1-esv r15', 'ISC DHCP 4.1-esv r15-p1', 'ISC DHCP 4.1-esv r15_b1', 'ISC DHCP 4.1-esv r16', 'ISC DHCP 4.1-esv r16-p1']

Name

['ISC DHCP >=4.4.0，<=4.4.3', 'ISC DHCP 4.1-esv r1', 'ISC DHCP 4.1-esv r10', 'ISC DHCP 4.1-esv r10_b1', 'ISC DHCP 4.1-esv r10_rc1', 'ISC DHCP 4.1-esv r10b1', 'ISC DHCP 4.1-esv r10rc1', 'ISC DHCP 4.1-esv r11', 'ISC DHCP 4.1-esv r11_b1', 'ISC DHCP 4.1-esv r11_rc1', 'ISC DHCP 4.1-esv r11_rc2', 'ISC DHCP 4.1-esv r11b1', 'ISC DHCP 4.1-esv r11rc1', 'ISC DHCP 4.1-esv r11rc', 'ISC DHCP 4.1-esv r12', 'ISC DHCP 4.1-esv r12-p1', 'ISC DHCP 4.1-esv r12_b1', 'ISC DHCP 4.1-esv r12_p1', 'ISC DHCP 4.1-esv r12b1', 'ISC DHCP 4.1-esv r13', 'ISC DHCP 4.1-esv r13_b1', 'ISC DHCP 4.1-esv r13b1', 'ISC DHCP 4.1-esv r14', 'ISC DHCP 4.1-esvr14_b1', 'ISC DHCP 4.1-esv r14b1', 'ISC DHCP 4.1-esv r15', 'ISC DHCP 4.1-esv r15-p1', 'ISC DHCP 4.1-esv r15_b1', 'ISC DHCP 4.1-esv r16', 'ISC DHCP 4.1-esv r16-p1']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-2928",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2022-2928"
    }
  },
  "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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5f53\u4eceadd_option()\u8c03\u7528\u51fd\u6570option_code_hash_lookup()\u65f6\uff0c\u5b83\u4f1a\u589e\u52a0\u9009\u9879\u7684refcount\u5b57\u6bb5\uff0c\u4f46\u662f\u672a\u5bf9option_dereference()\u7684\u76f8\u5e94\u8c03\u7528\u6765\u51cf\u5c11refcount\u5b57\u6bb5\uff0c\u51fd\u6570add_option()\u4ec5\u7528\u4e8e\u670d\u52a1\u5668\u5bf9\u79df\u7ea6\u67e5\u8be2\u6570\u636e\u5305\u7684\u54cd\u5e94\uff0c\u6bcf\u4e2a\u79df\u7ea6\u67e5\u8be2\u54cd\u5e94\u90fd\u4f1a\u4e3a\u591a\u4e2a\u9009\u9879\u8c03\u7528\u6b64\u51fd\u6570\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u89e6\u53d1\u5f15\u7528\u8ba1\u6570\u5668\u6ea2\u51fa\uff0c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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-2022-87943",
  "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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5f53\u4eceadd_option()\u8c03\u7528\u51fd\u6570option_code_hash_lookup()\u65f6\uff0c\u5b83\u4f1a\u589e\u52a0\u9009\u9879\u7684refcount\u5b57\u6bb5\uff0c\u4f46\u662f\u672a\u5bf9option_dereference()\u7684\u76f8\u5e94\u8c03\u7528\u6765\u51cf\u5c11refcount\u5b57\u6bb5\uff0c\u51fd\u6570add_option()\u4ec5\u7528\u4e8e\u670d\u52a1\u5668\u5bf9\u79df\u7ea6\u67e5\u8be2\u6570\u636e\u5305\u7684\u54cd\u5e94\uff0c\u6bcf\u4e2a\u79df\u7ea6\u67e5\u8be2\u54cd\u5e94\u90fd\u4f1a\u4e3a\u591a\u4e2a\u9009\u9879\u8c03\u7528\u6b64\u51fd\u6570\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u89e6\u53d1\u5f15\u7528\u8ba1\u6570\u5668\u6ea2\u51fa\uff0c\u5bfc\u81f4\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": "ISC DHCP\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "ISC DHCP \u003e=4.4.0\uff0c\u003c=4.4.3",
      "ISC DHCP 4.1-esv r1",
      "ISC DHCP 4.1-esv r10",
      "ISC DHCP 4.1-esv r10_b1",
      "ISC DHCP 4.1-esv r10_rc1",
      "ISC DHCP 4.1-esv r10b1",
      "ISC DHCP 4.1-esv r10rc1",
      "ISC DHCP 4.1-esv r11",
      "ISC DHCP 4.1-esv r11_b1",
      "ISC DHCP 4.1-esv r11_rc1",
      "ISC DHCP 4.1-esv r11_rc2",
      "ISC DHCP 4.1-esv r11b1",
      "ISC DHCP 4.1-esv r11rc1",
      "ISC DHCP 4.1-esv r11rc",
      "ISC DHCP 4.1-esv r12",
      "ISC DHCP 4.1-esv r12-p1",
      "ISC DHCP 4.1-esv r12_b1",
      "ISC DHCP 4.1-esv r12_p1",
      "ISC DHCP 4.1-esv r12b1",
      "ISC DHCP 4.1-esv r13",
      "ISC DHCP 4.1-esv r13_b1",
      "ISC DHCP 4.1-esv r13b1",
      "ISC DHCP 4.1-esv r14",
      "ISC DHCP 4.1-esvr14_b1",
      "ISC DHCP 4.1-esv r14b1",
      "ISC DHCP 4.1-esv r15",
      "ISC DHCP 4.1-esv r15-p1",
      "ISC DHCP 4.1-esv r15_b1",
      "ISC DHCP 4.1-esv r16",
      "ISC DHCP 4.1-esv r16-p1"
    ]
  },
  "referenceLink": "https://kb.isc.org/docs/cve-2022-2928",
  "serverity": "\u4e2d",
  "submitTime": "2022-10-11",
  "title": "ISC DHCP\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2022-2928 (GCVE-0-2022-2928)

Vulnerability from cvelistv5 – Published: 2022-10-07 04:45 – Updated: 2024-09-17 00:21

Title

An option refcount overflow exists in dhcpd

Summary

In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However, there is not a corresponding call to option_dereference() to decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort.

Severity

6.5 (Medium)


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

CWE

A DHCP server configured with allow leasequery;, a remote machine with access to the server can send lease queries for the same lease multiple times, leading to the add_option() function being repeatedly called. This could cause an option's refcount field to overflow and the server to abort. Internally, reference counters are integers and thus overflow at 2^31 references, so even at 1000 lease query responses per second, it would take more than three weeks to crash the server. Affects In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1

Assigner

isc CNA under the mitre root

CNA scorecard A 95/100 over 33 records in the last 180 days details

References

6 references

URL	Tags
https://kb.isc.org/docs/cve-2022-2928
https://lists.debian.org/debian-lts-announce/2022…	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.gentoo.org/glsa/202305-22	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
ISC	ISC DHCP	Affected: 4.4.0 through versions before 4.4.3-P1 Affected: 4.1 ESV 4.1-ESV-R1 through versions before 4.1-ESV-R16-P1

Date Public

2022-10-05 00:00

Credits

ISC would like to thank VictorV of Cyber Kunlun Lab for discovering and reporting this issue.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T00:53:00.326Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://kb.isc.org/docs/cve-2022-2928"
          },
          {
            "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": "4.4.0 through versions before 4.4.3-P1"
            },
            {
              "status": "affected",
              "version": "4.1 ESV 4.1-ESV-R1 through versions before 4.1-ESV-R16-P1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "ISC would like to thank VictorV of Cyber Kunlun Lab for discovering and reporting this issue."
        }
      ],
      "datePublic": "2022-10-05T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "In ISC DHCP 4.4.0 -\u003e 4.4.3, ISC DHCP 4.1-ESV-R1 -\u003e 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option\u0027s refcount field. However, there is not a corresponding call to option_dereference() to decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort."
        }
      ],
      "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": "A DHCP server configured with allow leasequery;, a remote machine with access to the server can send lease queries for the same lease multiple times, leading to the add_option() function being repeatedly called. This could cause an option\u0027s refcount field to overflow and the server to abort. Internally, reference counters are integers and thus overflow at 2^31 references, so even at 1000 lease query responses per second, it would take more than three weeks to crash the server. Affects In ISC DHCP 4.4.0 -\u003e 4.4.3, ISC DHCP 4.1-ESV-R1 -\u003e 4.1-ESV-R16-P1",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-05-03T00:00:00.000Z",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "shortName": "isc"
      },
      "references": [
        {
          "url": "https://kb.isc.org/docs/cve-2022-2928"
        },
        {
          "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": "An option refcount overflow exists in dhcpd",
      "workarounds": [
        {
          "lang": "en",
          "value": "Disable lease query on the server for DHCPv4 or restart the server periodically."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2022-2928",
    "datePublished": "2022-10-07T04:45:11.751Z",
    "dateReserved": "2022-08-22T00:00:00.000Z",
    "dateUpdated": "2024-09-17T00:21:40.167Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

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