cve-2018-16851
Vulnerability from cvelistv5
Published
2018-11-28 14:00
Modified
2024-08-05 10:32
Severity ?
EPSS score ?
Summary
Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.
References
▼ | URL | Tags | |
---|---|---|---|
secalert@redhat.com | http://www.securityfocus.com/bid/106027 | Third Party Advisory, VDB Entry | |
secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851 | Issue Tracking, Third Party Advisory | |
secalert@redhat.com | https://lists.debian.org/debian-lts-announce/2018/12/msg00005.html | Mailing List, Third Party Advisory | |
secalert@redhat.com | https://security.gentoo.org/glsa/202003-52 | Third Party Advisory | |
secalert@redhat.com | https://security.netapp.com/advisory/ntap-20181127-0001/ | Third Party Advisory | |
secalert@redhat.com | https://usn.ubuntu.com/3827-1/ | Third Party Advisory | |
secalert@redhat.com | https://usn.ubuntu.com/3827-2/ | Third Party Advisory | |
secalert@redhat.com | https://www.debian.org/security/2018/dsa-4345 | Third Party Advisory | |
secalert@redhat.com | https://www.samba.org/samba/security/CVE-2018-16851.html | Patch, Vendor Advisory |
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During the processing of an LDAP search before Samba\u0027s AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service." } ], "metrics": [ { "cvssV3_0": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.0" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-476", "description": "CWE-476", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2020-03-25T18:06:18", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat" }, "references": [ { "name": "106027", "tags": [ "vdb-entry", "x_refsource_BID" ], "url": "http://www.securityfocus.com/bid/106027" }, { "name": "USN-3827-2", "tags": [ "vendor-advisory", "x_refsource_UBUNTU" ], "url": "https://usn.ubuntu.com/3827-2/" }, { "name": "USN-3827-1", "tags": [ "vendor-advisory", "x_refsource_UBUNTU" ], "url": "https://usn.ubuntu.com/3827-1/" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://security.netapp.com/advisory/ntap-20181127-0001/" }, { "name": "[debian-lts-announce] 20181215 [SECURITY] [DLA 1607-1] samba security update", "tags": [ "mailing-list", "x_refsource_MLIST" ], "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00005.html" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851" }, { "name": "DSA-4345", "tags": [ "vendor-advisory", "x_refsource_DEBIAN" ], "url": "https://www.debian.org/security/2018/dsa-4345" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://www.samba.org/samba/security/CVE-2018-16851.html" }, { "name": "GLSA-202003-52", "tags": [ "vendor-advisory", "x_refsource_GENTOO" ], "url": "https://security.gentoo.org/glsa/202003-52" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "secalert@redhat.com", "ID": "CVE-2018-16851", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "samba", "version": { "version_data": [ { "version_value": "4.7.12" }, { "version_value": "4.8.7" }, { "version_value": "4.9.3" } ] } } ] }, "vendor_name": "[UNKNOWN]" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba\u0027s AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service." } ] }, "impact": { "cvss": [ [ { "vectorString": "6.5/CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.0" } ] ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-476" } ] } ] }, "references": { "reference_data": [ { "name": "106027", "refsource": "BID", "url": "http://www.securityfocus.com/bid/106027" }, { "name": "USN-3827-2", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3827-2/" }, { "name": "USN-3827-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3827-1/" }, { "name": "https://security.netapp.com/advisory/ntap-20181127-0001/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20181127-0001/" }, { "name": "[debian-lts-announce] 20181215 [SECURITY] [DLA 1607-1] samba security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00005.html" }, { "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851", "refsource": "CONFIRM", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851" }, { "name": "DSA-4345", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2018/dsa-4345" }, { "name": "https://www.samba.org/samba/security/CVE-2018-16851.html", "refsource": "CONFIRM", "url": "https://www.samba.org/samba/security/CVE-2018-16851.html" }, { "name": "GLSA-202003-52", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202003-52" } ] } } } }, "cveMetadata": { "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2018-16851", "datePublished": "2018-11-28T14:00:00", "dateReserved": "2018-09-11T00:00:00", "dateUpdated": "2024-08-05T10:32:53.988Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2018-16851\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2018-11-28T14:29:00.423\",\"lastModified\":\"2022-08-29T20:03:55.213\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. 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No hay m\u00e1s vulnerabilidades asociadas a este problema, simplemente una denegaci\u00f3n de servicio 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Advisory\"]},{\"url\":\"https://www.samba.org/samba/security/CVE-2018-16851.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]}]}}" } }
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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.