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

Vulnerability from cvelistv5 – Published: 2022-10-07 04:45 – Updated: 2024-09-16 18:28
VLAI
Title
DHCP memory leak
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.
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
Assigner
isc
References
Impacted products
Vendor Product Version
ISC ISC DHCP Affected: 1.0 through versions before 4.1-ESV-R16-P2
Affected: 4.2 through versions before 4.4.3.-P1
Create a notification for this product.
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
To clipboard 

{
  "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": "2022-10-05T00:00:00.000Z",
      "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": "2023-05-03T00:00:00.000Z",
        "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": "2022-10-07T04:45:12.836Z",
    "dateReserved": "2022-08-22T00:00:00.000Z",
    "dateUpdated": "2024-09-16T18:28:37.665Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-2929",
      "date": "2026-07-21",
      "epss": "0.00637",
      "percentile": "0.46551"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"1.0.0\", \"versionEndExcluding\": \"4.1-esv\", \"matchCriteriaId\": \"29B372FC-4ADF-480F-82EA-677BA9CE80F9\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.2.0\", \"versionEndIncluding\": \"4.4.3\", \"matchCriteriaId\": \"3828370A-E2C3-40C6-A4D4-A0E4FE932AD0\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"FBAABA4E-0D34-4644-AC26-E272CEE6C361\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:*\", \"matchCriteriaId\": \"179443DC-4B6A-408A-8BE5-B3E72188F43E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"C9BE7736-58CD-468B-84AB-B38C9B254BA6\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r10_rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"7EB6F7F0-B2A0-47E3-AD7A-4E7618A36F90\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r10b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"CA5FAE54-1645-4A38-A431-10E67304399A\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r10rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"2C0D1A71-CECB-4C86-87F6-EB3741BDF692\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r11:*:*:*:*:*:*\", \"matchCriteriaId\": \"ADF80D19-3B0A-4A74-944E-F33CCC30EADA\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"40B21FCB-43A8-4266-934D-ECFF8138F637\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"69D49F23-9074-49E7-985F-4D93393324CD\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"3F729D1D-7234-4BC2-839B-AE1BB9D16C25\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r11b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"9E01D88D-876D-45FE-B7ED-089DAD801EF6\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r11rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"C4B030B1-F008-4562-93C7-7E1C6D3D00F4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r11rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"FF656F5E-B317-4E0C-BF01-EC2A917142DC\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:*\", \"matchCriteriaId\": \"FBA64EEC-C0C7-4F11-8131-2868691E54DB\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r12-p1:*:*:*:*:*:*\", \"matchCriteriaId\": \"FFD3109A-1D76-4EA7-BF39-0B203AD945CF\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"157520D7-AE39-4E23-A8CF-DD75EA78C055\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r12_p1:*:*:*:*:*:*\", \"matchCriteriaId\": \"B07118EC-9508-42B8-8D09-5CE310DA2B43\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r12b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"2156D1BC-90AE-4AF3-964C-DAC7DCE14A5D\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r13:*:*:*:*:*:*\", \"matchCriteriaId\": \"A157E664-6ACE-44CE-AC07-64898B182EA1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r13_b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"0056BF7A-4A70-4F1D-89C2-25CCDB65217B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r13b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"BA8ADA07-94FA-4014-AF70-8FCAF5F0DB03\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r14:*:*:*:*:*:*\", \"matchCriteriaId\": \"1D21F05D-246F-41F5-81FD-286C26168E2E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r14_b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"12103C87-C942-481A-A68C-7BC83F964C06\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r14b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"A2E0124D-6330-4013-8145-4309FDAE60A8\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r15:*:*:*:*:*:*\", \"matchCriteriaId\": \"924E91FF-495F-4963-827F-57F7340C6560\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r15-p1:*:*:*:*:*:*\", \"matchCriteriaId\": \"3BC02748-557A-4131-A372-D99B62B4B93B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r15_b1:*:*:*:*:*:*\", \"matchCriteriaId\": \"76A11284-3D81-45F0-8055-17282945C14F\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r16:*:*:*:*:*:*\", \"matchCriteriaId\": \"98431CF5-D4C2-4FCF-BA81-0BBB631546D2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:isc:dhcp:4.1-esv:r16-p1:*:*:*:*:*:*\", \"matchCriteriaId\": \"FEA9F857-B59F-4D2D-8F7B-0D1BF08E9712\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"80E516C0-98A4-4ADE-B69F-66A772E2BAAA\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"E30D0E6F-4AE8-4284-8716-991DFA48CC5D\"}]}]}]",
      "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.\"}, {\"lang\": \"es\", \"value\": \"En ISC DHCP versiones 1.0 anteriores a 4.4.3, ISC DHCP versiones 4.1-ESV-R1 anteriores a 4.1-ESV-R16-P1, un sistema con acceso a un servidor DHCP, enviando paquetes DHCP dise\\u00f1ados para incluir etiquetas fqdn de m\\u00e1s de 63 bytes, podr\\u00eda llegar a causar a el servidor quedarse sin memoria\"}]",
      "id": "CVE-2022-2929",
      "lastModified": "2024-11-21T07:01:56.337",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"security-officer@isc.org\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"ADJACENT_NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 3.6}, {\"source\": \"nvd@nist.gov\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"ADJACENT_NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 3.6}]}",
      "published": "2022-10-07T05:15:11.320",
      "references": "[{\"url\": \"https://kb.isc.org/docs/cve-2022-2929\", \"source\": \"security-officer@isc.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html\", \"source\": \"security-officer@isc.org\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/\", \"source\": \"security-officer@isc.org\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/\", \"source\": \"security-officer@isc.org\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/\", \"source\": \"security-officer@isc.org\"}, {\"url\": \"https://security.gentoo.org/glsa/202305-22\", \"source\": \"security-officer@isc.org\"}, {\"url\": \"https://kb.isc.org/docs/cve-2022-2929\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.gentoo.org/glsa/202305-22\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "security-officer@isc.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-770\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T01:36:43.000Z",
      "cve": "CVE-2022-2929",
      "id": "msrc_CVE-2022-2929",
      "initial_release_date": "2022-10-02T00:00:00.000Z",
      "product_status:fixed": "4",
      "product_status:known_affected": "4",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "DHCP memory leak",
      "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-2929.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-2929\",\"sourceIdentifier\":\"security-officer@isc.org\",\"published\":\"2022-10-07T05:15:11.320\",\"lastModified\":\"2026-06-17T04:42:50.300\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"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.\"},{\"lang\":\"es\",\"value\":\"En ISC DHCP versiones 1.0 anteriores a 4.4.3, ISC DHCP versiones 4.1-ESV-R1 anteriores a 4.1-ESV-R16-P1, un sistema con acceso a un servidor DHCP, enviando paquetes DHCP dise\u00f1ados para incluir etiquetas fqdn de m\u00e1s de 63 bytes, podr\u00eda llegar a causar a el servidor quedarse sin memoria\"}],\"affected\":[{\"source\":\"security-officer@isc.org\",\"affectedData\":[{\"vendor\":\"ISC\",\"product\":\"ISC DHCP\",\"versions\":[{\"version\":\"1.0 through versions before 4.1-ESV-R16-P2\",\"status\":\"affected\"},{\"version\":\"4.2 through versions before 4.4.3.-P1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-officer@isc.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.0.0\",\"versionEndExcluding\":\"4.1-esv\",\"matchCriteriaId\":\"29B372FC-4ADF-480F-82EA-677BA9CE80F9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.2.0\",\"versionEndIncluding\":\"4.4.3\",\"matchCriteriaId\":\"3828370A-E2C3-40C6-A4D4-A0E4FE932AD0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FBAABA4E-0D34-4644-AC26-E272CEE6C361\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:*\",\"matchCriteriaId\":\"179443DC-4B6A-408A-8BE5-B3E72188F43E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"C9BE7736-58CD-468B-84AB-B38C9B254BA6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r10_rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7EB6F7F0-B2A0-47E3-AD7A-4E7618A36F90\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r10b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"CA5FAE54-1645-4A38-A431-10E67304399A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r10rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2C0D1A71-CECB-4C86-87F6-EB3741BDF692\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r11:*:*:*:*:*:*\",\"matchCriteriaId\":\"ADF80D19-3B0A-4A74-944E-F33CCC30EADA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"40B21FCB-43A8-4266-934D-ECFF8138F637\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"69D49F23-9074-49E7-985F-4D93393324CD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"3F729D1D-7234-4BC2-839B-AE1BB9D16C25\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r11b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"9E01D88D-876D-45FE-B7ED-089DAD801EF6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r11rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"C4B030B1-F008-4562-93C7-7E1C6D3D00F4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r11rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"FF656F5E-B317-4E0C-BF01-EC2A917142DC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:*\",\"matchCriteriaId\":\"FBA64EEC-C0C7-4F11-8131-2868691E54DB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r12-p1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FFD3109A-1D76-4EA7-BF39-0B203AD945CF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"157520D7-AE39-4E23-A8CF-DD75EA78C055\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r12_p1:*:*:*:*:*:*\",\"matchCriteriaId\":\"B07118EC-9508-42B8-8D09-5CE310DA2B43\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r12b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2156D1BC-90AE-4AF3-964C-DAC7DCE14A5D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r13:*:*:*:*:*:*\",\"matchCriteriaId\":\"A157E664-6ACE-44CE-AC07-64898B182EA1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r13_b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"0056BF7A-4A70-4F1D-89C2-25CCDB65217B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r13b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"BA8ADA07-94FA-4014-AF70-8FCAF5F0DB03\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r14:*:*:*:*:*:*\",\"matchCriteriaId\":\"1D21F05D-246F-41F5-81FD-286C26168E2E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r14_b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"12103C87-C942-481A-A68C-7BC83F964C06\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r14b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2E0124D-6330-4013-8145-4309FDAE60A8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r15:*:*:*:*:*:*\",\"matchCriteriaId\":\"924E91FF-495F-4963-827F-57F7340C6560\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r15-p1:*:*:*:*:*:*\",\"matchCriteriaId\":\"3BC02748-557A-4131-A372-D99B62B4B93B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r15_b1:*:*:*:*:*:*\",\"matchCriteriaId\":\"76A11284-3D81-45F0-8055-17282945C14F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r16:*:*:*:*:*:*\",\"matchCriteriaId\":\"98431CF5-D4C2-4FCF-BA81-0BBB631546D2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:dhcp:4.1-esv:r16-p1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FEA9F857-B59F-4D2D-8F7B-0D1BF08E9712\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"80E516C0-98A4-4ADE-B69F-66A772E2BAAA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E30D0E6F-4AE8-4284-8716-991DFA48CC5D\"}]}]}],\"references\":[{\"url\":\"https://kb.isc.org/docs/cve-2022-2929\",\"source\":\"security-officer@isc.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html\",\"source\":\"security-officer@isc.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/\",\"source\":\"security-officer@isc.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/\",\"source\":\"security-officer@isc.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/\",\"source\":\"security-officer@isc.org\"},{\"url\":\"https://security.gentoo.org/glsa/202305-22\",\"source\":\"security-officer@isc.org\"},{\"url\":\"https://kb.isc.org/docs/cve-2022-2929\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.gentoo.org/glsa/202305-22\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-03T01:40:47+00:00",
      "cve": "CVE-2022-2929",
      "id": "CVE-2022-2929",
      "initial_release_date": "2022-10-05T00:00:00+00:00",
      "product_status:fixed": "83",
      "product_status:known_affected": "11",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "dhcp: DHCP memory leak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-2929.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-17T13:56:20Z",
      "cve": "CVE-2022-2929",
      "id": "CVE-2022-2929",
      "initial_release_date": "2023-02-15T03:32:12Z",
      "product_status:known_affected": "386",
      "product_status:recommended": "296",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-2929",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-2929.json",
      "version": "45"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.