High
Security advisory
While handling a particular type of malformed packet BIND erroneously selects a SERVFAIL rcode instead of a FORMERR rcode. If the receiving view has the SERVFAIL cache feature enabled, this can trigger an assertion failure in badcache.c when the request doesn't contain all of the expected information. Affects BIND 9.10.5-S1 to 9.10.5-S4, 9.10.6-S1, 9.10.6-S2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-5734
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:59 UTC · Revision 1
Source evidence
While handling a particular type of malformed packet BIND erroneously selects a SERVFAIL rcode instead of a FORMERR rcode. If the receiving view has the SERVFAIL cache feature enabled, this can trigger an assertion failure in badcache.c when the request doesn't contain all of the expected information. Affects BIND 9.10.5-S1 to 9.10.5-S4, 9.10.6-S1, 9.10.6-S2.
osv:CVE-2018-5734
Complete source record
{
"id": "ce580135de0bff6122225849a41140b03c21f4665d9e2fd536309bd20a7cb8de",
"url": "https://osv.dev/vulnerability/CVE-2018-5734",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-5734",
"summary": "While handling a particular type of malformed packet BIND erroneously selects a SERVFAIL rcode instead of a FORMERR rcode. If the receiving view has the SERVFAIL cache feature enabled, this can trigger an assertion failure in badcache.c when the request doesn't contain all of the expected information. Affects BIND 9.10.5-S1 to 9.10.5-S4, 9.10.6-S1, 9.10.6-S2.",
"evidence": "osv:CVE-2018-5734",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-5734",
"aliases": [
"CVE-2018-5734"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/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": "341e64a2de908ceec50ed46d243bf3402342735c"
},
{
"last_affected": "2c00a11db3e577fefce3c5d384db99a924bf518b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:isc:bind:9.10.5:s1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.5-s1"
},
{
"last_affected": "9.10.5-s1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.10.6:s1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.6-s1"
},
{
"last_affected": "9.10.6-s1"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"9.10.5-s1",
"9.10.6-s1",
"v9.10.6b1",
"v9.10.5",
"v9.10.5rc3",
"v9.10.5rc2",
"v9.10.5rc1",
"v9.10.5b1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-5734.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.isc.org/isc-projects/bind9",
"type": "GIT",
"events": [
{
"introduced": "341e64a2de908ceec50ed46d243bf3402342735c"
},
{
"last_affected": "2c00a11db3e577fefce3c5d384db99a924bf518b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:isc:bind:9.10.5:s1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.5-s1"
},
{
"last_affected": "9.10.5-s1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:isc:bind:9.10.6:s1:*:*:*:*:*:*",
"range": [
{
"introduced": "9.10.6-s1"
},
{
"last_affected": "9.10.6-s1"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"9.10.5-s1",
"9.10.6-s1",
"v9.10.6b1",
"v9.10.5",
"v9.10.5rc3",
"v9.10.5rc2",
"v9.10.5rc1",
"v9.10.5b1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-5734.json"
}
}
],
"modified": "2026-10-26T10:45:05.553397013Z",
"provider": "osv",
"references": [
"https://kb.isc.org/docs/aa-01562",
"https://security.netapp.com/advisory/ntap-20180926-0005/"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:isc:bind:9.10.5:s4:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.10.6:s2:*:*:*:*:*:*"
],
"vendor_product": "isc:bind",
"extracted_events": [
{
"range": [
{
"introduced": "9.10.5-s4"
},
{
"last_affected": "9.10.5-s4"
},
{
"introduced": "9.10.5-s4"
},
{
"last_affected": "9.10.5-s4"
},
{
"introduced": "9.10.6-s2"
},
{
"last_affected": "9.10.6-s2"
},
{
"introduced": "9.10.6-s2"
},
{
"last_affected": "9.10.6-s2"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-5734",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450298,
"published_at": "2019-01-16T20:29:00.8+00:00"
}