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 

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            "name": "[debian-lts-announce] 20221010 [SECURITY] [DLA 3146-1] isc-dhcp security update",
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      "id": "CVE-2022-2929",
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      "published": "2022-10-07T05:15:11.320",
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    "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\":\"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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 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  }
}


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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.