Medium
Security advisory
ISC BIND 9.x before 9.9.9-P2, 9.10.x before 9.10.4-P2, and 9.11.x before 9.11.0b2, when lwresd or the named lwres option is enabled, allows remote attackers to cause a denial of service (daemon crash) via a long request that uses the lightweight resolver protocol.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-2775
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:03 UTC · Revision 1
Source evidence
ISC BIND 9.x before 9.9.9-P2, 9.10.x before 9.10.4-P2, and 9.11.x before 9.11.0b2, when lwresd or the named lwres option is enabled, allows remote attackers to cause a denial of service (daemon crash) via a long request that uses the lightweight resolver protocol.
osv:CVE-2016-2775
Complete source record
{
"id": "8955bfc5d7763dc01680dbc92b9c21e6e0757d60894850cf2f1f97e6414ecafe",
"url": "https://osv.dev/vulnerability/CVE-2016-2775",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-2775",
"summary": "ISC BIND 9.x before 9.9.9-P2, 9.10.x before 9.10.4-P2, and 9.11.x before 9.11.0b2, when lwresd or the named lwres option is enabled, allows remote attackers to cause a denial of service (daemon crash) via a long request that uses the lightweight resolver protocol.",
"evidence": "osv:CVE-2016-2775",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2016-2775",
"aliases": [
"CVE-2016-2775"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/isc-projects/bind9",
"type": "GIT",
"events": [
{
"introduced": "19d6c56085e97cf4ac559cdc27edd624127bcb32"
},
{
"last_affected": "2d6d4babba5b5d2237bd37c0e4c3c993b7efd255"
},
{
"introduced": "63fbb3ea39094353765c04a6066b9e1d1013992a"
},
{
"last_affected": "2799933bc6790356d4b3eebdfe21dc0f87977f14"
},
{
"introduced": "b7843f9794be456c53d7dc0b51ead89f2c5d3351"
},
{
"last_affected": "1477c19dd9a347ee19a42dac227f299a4680506f"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.9.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.0"
},
{
"last_affected": "9.10.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:-:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-NA"
},
{
"last_affected": "9.9.9-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:b1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-b1"
},
{
"last_affected": "9.9.9-b1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:p1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-p1"
},
{
"last_affected": "9.9.9-p1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:s1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-s1"
},
{
"last_affected": "9.9.9-s1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:b2:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-b2"
},
{
"last_affected": "9.9.9-b2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-rc1"
},
{
"last_affected": "9.9.9-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.10.4:-:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.4-NA"
},
{
"last_affected": "9.10.4-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.10.4:p1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.4-p1"
},
{
"last_affected": "9.10.4-p1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.11.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-NA"
},
{
"last_affected": "9.11.0-NA"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"9.10.4-NA",
"9.10.4-p1",
"9.11.0-NA",
"9.9.9-NA",
"9.9.9-b1",
"9.9.9-b2",
"9.9.9-rc1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-2775.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.isc.org/isc-projects/bind9",
"type": "GIT",
"events": [
{
"introduced": "19d6c56085e97cf4ac559cdc27edd624127bcb32"
},
{
"last_affected": "2d6d4babba5b5d2237bd37c0e4c3c993b7efd255"
},
{
"introduced": "63fbb3ea39094353765c04a6066b9e1d1013992a"
},
{
"last_affected": "2799933bc6790356d4b3eebdfe21dc0f87977f14"
},
{
"introduced": "b7843f9794be456c53d7dc0b51ead89f2c5d3351"
},
{
"last_affected": "1477c19dd9a347ee19a42dac227f299a4680506f"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.9.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.0"
},
{
"last_affected": "9.10.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:-:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-NA"
},
{
"last_affected": "9.9.9-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:b1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-b1"
},
{
"last_affected": "9.9.9-b1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:p1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-p1"
},
{
"last_affected": "9.9.9-p1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:s1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-s1"
},
{
"last_affected": "9.9.9-s1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:b2:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-b2"
},
{
"last_affected": "9.9.9-b2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.9.9:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-rc1"
},
{
"last_affected": "9.9.9-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.10.4:-:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.4-NA"
},
{
"last_affected": "9.10.4-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.10.4:p1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.4-p1"
},
{
"last_affected": "9.10.4-p1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.11.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-NA"
},
{
"last_affected": "9.11.0-NA"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"9.10.4-NA",
"9.10.4-p1",
"9.11.0-NA",
"9.9.9-NA",
"9.9.9-b1",
"9.9.9-b2",
"9.9.9-rc1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-2775.json"
}
}
],
"modified": "2026-10-24T10:30:47.985140473Z",
"provider": "osv",
"references": [
"https://kb.isc.org/article/AA-01435",
"https://kb.isc.org/article/AA-01436",
"https://kb.isc.org/article/AA-01438",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7T2WJP5ELO4ZRSBXSETIZ3GAO6KOEFTA/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZUCSMEOZIZ2R2SKA4FPLTOVZHJBAOWC/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJ5STNEUHBNEPUHJT7CYEVSMATFYMIX7/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TT754KDUJTKOASJODJX7FKHCOQ6EC7UX/",
"https://access.redhat.com/errata/RHBA-2017:0651",
"https://access.redhat.com/errata/RHBA-2017:1767",
"https://access.redhat.com/errata/RHSA-2017:2533",
"https://security.gentoo.org/glsa/201610-07",
"https://security.netapp.com/advisory/ntap-20160722-0002/",
"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05321107",
"https://kb.isc.org/article/AA-01393/74/CVE-2016-2775"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "23"
},
{
"last_affected": "23"
},
{
"introduced": "24"
},
{
"last_affected": "24"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:hp:hp-ux:b.11.31:*:*:*:*:*:*:*"
],
"vendor_product": "hp:hp-ux",
"extracted_events": [
{
"range": [
{
"introduced": "b.11.31"
},
{
"last_affected": "b.11.31"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:isc:bind:9.10.4:beta1:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.10.4:beta2:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.10.4:beta3:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.11.0:alpha1:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.11.0:alpha2:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.11.0:alpha3:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.11.0:beta1:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.9.9:s1rc1:*:*:*:*:*:*"
],
"vendor_product": "isc:bind",
"extracted_events": [
{
"range": [
{
"introduced": "9.9.9-s1rc1"
},
{
"last_affected": "9.9.9-s1rc1"
},
{
"introduced": "9.9.9-s1rc1"
},
{
"last_affected": "9.9.9-s1rc1"
},
{
"introduced": "9.10.4-beta1"
},
{
"last_affected": "9.10.4-beta1"
},
{
"introduced": "9.10.4-beta1"
},
{
"last_affected": "9.10.4-beta1"
},
{
"introduced": "9.10.4-beta2"
},
{
"last_affected": "9.10.4-beta2"
},
{
"introduced": "9.10.4-beta2"
},
{
"last_affected": "9.10.4-beta2"
},
{
"introduced": "9.10.4-beta3"
},
{
"last_affected": "9.10.4-beta3"
},
{
"introduced": "9.10.4-beta3"
},
{
"last_affected": "9.10.4-beta3"
},
{
"introduced": "9.11.0-alpha1"
},
{
"last_affected": "9.11.0-alpha1"
},
{
"introduced": "9.11.0-alpha1"
},
{
"last_affected": "9.11.0-alpha1"
},
{
"introduced": "9.11.0-alpha2"
},
{
"last_affected": "9.11.0-alpha2"
},
{
"introduced": "9.11.0-alpha2"
},
{
"last_affected": "9.11.0-alpha2"
},
{
"introduced": "9.11.0-alpha3"
},
{
"last_affected": "9.11.0-alpha3"
},
{
"introduced": "9.11.0-alpha3"
},
{
"last_affected": "9.11.0-alpha3"
},
{
"introduced": "9.11.0-beta1"
},
{
"last_affected": "9.11.0-beta1"
},
{
"introduced": "9.11.0-beta1"
},
{
"last_affected": "9.11.0-beta1"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_desktop",
"extracted_events": [
{
"range": [
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
},
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_eus:7.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:7.3:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_eus",
"extracted_events": [
{
"range": [
{
"introduced": "7.2"
},
{
"last_affected": "7.2"
},
{
"introduced": "7.3"
},
{
"last_affected": "7.3"
},
{
"introduced": "7.4"
},
{
"last_affected": "7.4"
},
{
"introduced": "7.5"
},
{
"last_affected": "7.5"
},
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
},
{
"introduced": "7.7"
},
{
"last_affected": "7.7"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server",
"extracted_events": [
{
"range": [
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
},
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_aus",
"extracted_events": [
{
"range": [
{
"introduced": "7.2"
},
{
"last_affected": "7.2"
},
{
"introduced": "7.3"
},
{
"last_affected": "7.3"
},
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
},
{
"introduced": "7.7"
},
{
"last_affected": "7.7"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_tus",
"extracted_events": [
{
"range": [
{
"introduced": "7.2"
},
{
"last_affected": "7.2"
},
{
"introduced": "7.3"
},
{
"last_affected": "7.3"
},
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
},
{
"introduced": "7.7"
},
{
"last_affected": "7.7"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_workstation",
"extracted_events": [
{
"range": [
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
},
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-2775",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 436656,
"published_at": "2016-07-19T22:59:00.147+00:00"
}