cve-2021-3671
Vulnerability from cvelistv5
Published
2021-10-12 00:00
Modified
2024-08-03 17:01
Severity ?
EPSS score ?
Summary
A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.
References
{ containers: { adp: [ { providerMetadata: { dateUpdated: "2024-08-03T17:01:07.967Z", orgId: "af854a3a-2127-422b-91ae-364da2661108", shortName: "CVE", }, references: [ { tags: [ "x_transferred", ], url: "https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C", }, { tags: [ "x_transferred", ], url: "https://bugzilla.samba.org/show_bug.cgi?id=14770%2C", }, { tags: [ "x_transferred", ], url: "https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a", }, { name: "DSA-5287", tags: [ "vendor-advisory", "x_transferred", ], url: "https://www.debian.org/security/2022/dsa-5287", }, { name: "[debian-lts-announce] 20221126 [SECURITY] [DLA 3206-1] heimdal security update", tags: [ "mailing-list", "x_transferred", ], url: "https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html", }, { tags: [ "x_transferred", ], url: "https://security.netapp.com/advisory/ntap-20221215-0002/", }, { tags: [ "x_transferred", ], url: "https://security.netapp.com/advisory/ntap-20230216-0008/", }, ], title: "CVE Program Container", }, ], cna: { affected: [ { product: "Samba", vendor: "n/a", versions: [ { status: "affected", version: "Fixed in samba 4.13.12, samba 4.14.8", }, ], }, ], descriptions: [ { lang: "en", value: "A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.", }, ], problemTypes: [ { descriptions: [ { cweId: "CWE-476", description: "CWE-476", lang: "en", type: "CWE", }, ], }, ], providerMetadata: { dateUpdated: "2023-02-16T00:00:00", orgId: "53f830b8-0a3f-465b-8143-3b8a9948e749", shortName: "redhat", }, references: [ { url: "https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C", }, { url: "https://bugzilla.samba.org/show_bug.cgi?id=14770%2C", }, { url: "https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a", }, { name: "DSA-5287", tags: [ "vendor-advisory", ], url: "https://www.debian.org/security/2022/dsa-5287", }, { name: "[debian-lts-announce] 20221126 [SECURITY] [DLA 3206-1] heimdal security update", tags: [ "mailing-list", ], url: "https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html", }, { url: "https://security.netapp.com/advisory/ntap-20221215-0002/", }, { url: "https://security.netapp.com/advisory/ntap-20230216-0008/", }, ], }, }, cveMetadata: { assignerOrgId: "53f830b8-0a3f-465b-8143-3b8a9948e749", assignerShortName: "redhat", cveId: "CVE-2021-3671", datePublished: "2021-10-12T00:00:00", dateReserved: "2021-07-30T00:00:00", dateUpdated: "2024-08-03T17:01:07.967Z", state: "PUBLISHED", }, dataType: "CVE_RECORD", dataVersion: "5.1", "vulnerability-lookup:meta": { fkie_nvd: { configurations: "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"4.13.12\", \"matchCriteriaId\": \"AE0BDAA5-2AEC-40FD-A355-571DB1F7E49B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.14.0\", \"versionEndExcluding\": \"4.14.8\", \"matchCriteriaId\": \"A4749057-1B17-4E8E-A26E-0C2E2A6EA0BA\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:netapp:management_services_for_element_software:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"86B51137-28D9-41F2-AFA2-3CC22B4954D1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:netapp:management_services_for_netapp_hci:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"4455CF3A-CC91-4BE4-A7AB-929AC82E34F5\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"E7CF3019-975D-40BB-A8A4-894E62BD3797\"}]}]}]", descriptions: "[{\"lang\": \"en\", \"value\": \"A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.\"}, {\"lang\": \"es\", \"value\": \"Se ha encontrado una desreferencia de puntero null en la forma en que el servidor kerberos de Samba manejaba el sname faltante en TGS-REQ (Ticket Granting Server - Request). Un usuario autenticado podr\\u00eda usar este fallo para bloquear el servidor samba\"}]", id: "CVE-2021-3671", lastModified: "2024-11-21T06:22:07.473", metrics: "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 3.6}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:S/C:N/I:N/A:P\", \"baseScore\": 4.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"SINGLE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}", published: "2021-10-12T18:15:08.357", references: "[{\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"https://bugzilla.samba.org/show_bug.cgi?id=14770%2C\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20221215-0002/\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20230216-0008/\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2022/dsa-5287\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://bugzilla.samba.org/show_bug.cgi?id=14770%2C\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20221215-0002/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20230216-0008/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2022/dsa-5287\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]", sourceIdentifier: "secalert@redhat.com", vulnStatus: "Modified", weaknesses: "[{\"source\": \"secalert@redhat.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-476\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-476\"}]}]", }, nvd: "{\"cve\":{\"id\":\"CVE-2021-3671\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2021-10-12T18:15:08.357\",\"lastModified\":\"2024-11-21T06:22:07.473\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.\"},{\"lang\":\"es\",\"value\":\"Se ha encontrado una desreferencia de puntero null en la forma en que el servidor kerberos de Samba manejaba el sname faltante en TGS-REQ (Ticket Granting Server - Request). Un usuario autenticado podría usar este fallo para bloquear el servidor samba\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:S/C:N/I:N/A:P\",\"baseScore\":4.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.13.12\",\"matchCriteriaId\":\"AE0BDAA5-2AEC-40FD-A355-571DB1F7E49B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.14.0\",\"versionEndExcluding\":\"4.14.8\",\"matchCriteriaId\":\"A4749057-1B17-4E8E-A26E-0C2E2A6EA0BA\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:management_services_for_element_software:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"86B51137-28D9-41F2-AFA2-3CC22B4954D1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:management_services_for_netapp_hci:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4455CF3A-CC91-4BE4-A7AB-929AC82E34F5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E7CF3019-975D-40BB-A8A4-894E62BD3797\"}]}]}],\"references\":[{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://bugzilla.samba.org/show_bug.cgi?id=14770%2C\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20221215-0002/\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20230216-0008/\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2022/dsa-5287\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://bugzilla.samba.org/show_bug.cgi?id=14770%2C\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20221215-0002/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20230216-0008/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2022/dsa-5287\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}", }, }
Log in or create an account to share your comment.
Security Advisory comment format.
This schema specifies the format of a comment related to a security advisory.
Title of the comment
Description of the comment
Loading…
Loading…
Loading…
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.