Medium
Security advisory
ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS servers to cause a denial of service (secondary DNS server crash) via a large AXFR response, and possibly allows IXFR servers to cause a denial of service (IXFR client crash) via a large IXFR response and allows remote authenticated users to cause a denial of service (primary DNS server crash) via a large UPDATE message.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-6170
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:59 UTC · Revision 1
Source evidence
ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS servers to cause a denial of service (secondary DNS server crash) via a large AXFR response, and possibly allows IXFR servers to cause a denial of service (IXFR client crash) via a large IXFR response and allows remote authenticated users to cause a denial of service (primary DNS server crash) via a large UPDATE message.
osv:CVE-2016-6170
Complete source record
{
"id": "e88dedd36d72eee0036bdc718613e90e9635e3fcc2351efd21e67b79ee737508",
"url": "https://osv.dev/vulnerability/CVE-2016-6170",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-6170",
"summary": "ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS servers to cause a denial of service (secondary DNS server crash) via a large AXFR response, and possibly allows IXFR servers to cause a denial of service (IXFR client crash) via a large IXFR response and allows remote authenticated users to cause a denial of service (primary DNS server crash) via a large UPDATE message.",
"evidence": "osv:CVE-2016-6170",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2016-6170",
"aliases": [
"CVE-2016-6170"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/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": "a23f742c3d767f41bfb1a143b0605a766936c4d9"
}
],
"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:p1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-p1"
},
{
"last_affected": "9.9.9-p1"
}
],
"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:a1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-a1"
},
{
"last_affected": "9.11.0-a1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.11.0:b1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-b1"
},
{
"last_affected": "9.11.0-b1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.11.0:a2:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-a2"
},
{
"last_affected": "9.11.0-a2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.11.0:a3:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-a3"
},
{
"last_affected": "9.11.0-a3"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"9.10.4-NA",
"9.10.4-p1",
"9.11.0-a1",
"9.11.0-a2",
"9.11.0-a3",
"9.9.9-NA",
"9.9.9-p1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-6170.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": "a23f742c3d767f41bfb1a143b0605a766936c4d9"
}
],
"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:p1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.9.9-p1"
},
{
"last_affected": "9.9.9-p1"
}
],
"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:a1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-a1"
},
{
"last_affected": "9.11.0-a1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.11.0:b1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-b1"
},
{
"last_affected": "9.11.0-b1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.11.0:a2:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-a2"
},
{
"last_affected": "9.11.0-a2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.11.0:a3:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0-a3"
},
{
"last_affected": "9.11.0-a3"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"9.10.4-NA",
"9.10.4-p1",
"9.11.0-a1",
"9.11.0-a2",
"9.11.0-a3",
"9.9.9-NA",
"9.9.9-p1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-6170.json"
}
}
],
"modified": "2026-10-26T10:45:05.329566893Z",
"provider": "osv",
"references": [
"https://kb.isc.org/article/AA-01390",
"https://kb.isc.org/article/AA-01390/169/CVE-2016-6170",
"https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html",
"https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015073.html",
"https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015075.html",
"https://security.gentoo.org/glsa/201610-07",
"https://bugzilla.redhat.com/show_bug.cgi?id=1353563",
"https://github.com/sischkg/xfer-limit/blob/master/README.md"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:isc:bind:9.9.9:beta1:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.9.9:beta2:*:*:*:*:*:*"
],
"vendor_product": "isc:bind",
"extracted_events": [
{
"range": [
{
"introduced": "9.9.9-beta1"
},
{
"last_affected": "9.9.9-beta1"
},
{
"introduced": "9.9.9-beta1"
},
{
"last_affected": "9.9.9-beta1"
},
{
"introduced": "9.9.9-beta2"
},
{
"last_affected": "9.9.9-beta2"
},
{
"introduced": "9.9.9-beta2"
},
{
"last_affected": "9.9.9-beta2"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux",
"extracted_events": [
{
"range": [
{
"introduced": "5.0"
},
{
"last_affected": "5.0"
},
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
},
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-6170",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450292,
"published_at": "2016-07-06T14:59:05.597+00:00"
}