High
Security advisory
It was found in Undertow before 1.3.28 that with non-clean TCP close, the Websocket server gets into infinite loop on every IO thread, effectively causing DoS.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-2670
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:38 UTC · Revision 1
Source evidence
It was found in Undertow before 1.3.28 that with non-clean TCP close, the Websocket server gets into infinite loop on every IO thread, effectively causing DoS.
osv:CVE-2017-2670
Complete source record
{
"id": "2a862e61093eeac7b19a6f48facbca9f5b15e3cdaeb9f31a82c4276ef5b75597",
"url": "https://osv.dev/vulnerability/CVE-2017-2670",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-2670",
"summary": "It was found in Undertow before 1.3.28 that with non-clean TCP close, the Websocket server gets into infinite loop on every IO thread, effectively causing DoS.",
"evidence": "osv:CVE-2017-2670",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-2670",
"aliases": [
"CVE-2017-2670",
"GHSA-3x7h-5hfr-hvjm"
],
"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/undertow-io/undertow",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "49129cdcc2fb541f13cc6aeb12fa9ad65016129f"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:redhat:undertow:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "1.3.28"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"1.3.27.Final",
"1.3.26.Final",
"1.3.25.Final",
"1.3.24.Final",
"1.3.23.Final",
"1.3.22.Final",
"1.3.21.Final",
"1.3.20.Final",
"1.3.19.Final",
"1.3.18.Final",
"1.3.17.Final",
"1.3.16.Final",
"1.3.15.Final",
"1.3.14.Final",
"1.3.13.Final",
"1.3.12.Final",
"1.3.11.Final",
"1.3.10.Final",
"1.3.9.Final",
"1.3.8.Final",
"1.3.7.Final",
"1.3.6.Final",
"1.3.5.Final",
"1.3.3.Final",
"1.3.2.Final",
"1.3.1.Final",
"1.3.0.Final",
"1.3.0.CR3",
"1.3.0.CR2",
"1.3.0.CR1",
"1.3.0.Beta13",
"1.3.0.Beta12",
"1.3.0.Beta11",
"1.3.0.Beta10",
"1.3.0.Beta9",
"1.3.0.Beta8",
"1.3.0.Beta7",
"1.3.0.Beta6",
"1.3.0.Beta5",
"1.3.0.Beta4",
"1.3.0.Beta3",
"1.3.0.Beta2",
"1.3.0.Beta1",
"1.2.4.Final",
"1.2.3.Final",
"1.2.2.Final",
"1.2.1.Final",
"1.2.0.Final",
"1.2.0.CR1",
"1.2.0.Beta10",
"1.2.0.Beta9",
"1.2.0.Beta8",
"1.2.0.Beta7",
"1.2.0.Beta6",
"1.2.0.Beta5",
"1.2.0.Beta4",
"1.2.0.Beta3",
"1.2.0.Beta2",
"1.2.0.Beta1",
"1.1.0.Beta8",
"1.1.0.Beta7",
"1.1.0.Beta6",
"1.1.0.Beta5",
"1.1.0.Beta4",
"1.1.0.Beta3",
"1.1.0.Beta2",
"1.1.0.Beta1",
"1.0.3.Final",
"1.0.2.Final",
"1.0.1.Final",
"1.0.0.Final",
"1.0.0.CR4",
"1.0.0.CR3",
"1.0.0.CR2",
"1.0.0.CR1",
"1.0.0.Beta33",
"1.0.0.Beta32",
"1.0.0.Beta31",
"1.0.0.Beta30",
"1.0.0.Beta29",
"1.0.0.Beta28",
"1.0.0.Beta27",
"1.0.0.Beta26",
"1.0.0.Beta25",
"1.0.0.Beta24",
"1.0.0.Beta23",
"1.0.0.Beta22",
"1.0.0.Beta21",
"1.0.0.Beta20",
"1.0.0.Beta19",
"1.0.0.Beta18",
"1.0.0.Beta17",
"1.0.0.Beta16",
"1.0.0.Beta15",
"1.0.0.Beta14",
"1.0.0.Beta13",
"1.0.0.Beta12",
"1.0.0.Beta11",
"1.0.0.Beta10",
"1.0.0.Beta9",
"1.0.0.Beta8",
"1.0.0.Beta7",
"1.0.0.Beta6",
"1.0.0.Beta5",
"1.0.0.Beta4",
"1.0.0.Beta3",
"1.0.0.Beta2",
"1.0.0.Beta1",
"1.0.0.Alpha22",
"1.0.0.Alpha21",
"1.0.0.Alpha20",
"1.0.0.Alpha19",
"1.0.0.Alpha18",
"1.0.0.Alpha17",
"1.0.0.Alpha16",
"1.0.0.Alpha15",
"1.0.0.Alpha14",
"1.0.0.Alpha13",
"1.0.0.Alpha12",
"1.0.0.Alpha11",
"1.0.0.Alpha10",
"1.0.0.Alpha9",
"1.0.0.Alpha8",
"1.0.0.Alpha7",
"1.0.0.Alpha6",
"1.0.0.Alpha5",
"1.0.0.Alpha4",
"1.0.0.Alpha3",
"1.0.0.Alpha2",
"1.0.0.Alpha1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-2670.json"
}
}
],
"modified": "2026-10-24T10:30:42.419591820Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2017:1410",
"https://access.redhat.com/errata/RHSA-2017:1411",
"https://access.redhat.com/errata/RHSA-2017:1412",
"https://access.redhat.com/errata/RHSA-2017:3454",
"https://access.redhat.com/errata/RHSA-2017:3455",
"https://access.redhat.com/errata/RHSA-2017:3456",
"https://access.redhat.com/errata/RHSA-2017:3458",
"https://www.debian.org/security/2017/dsa-3906",
"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2670"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:jboss_enterprise_application_platform:6.0.0:*:*:*:*:*:*:*",
"cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.0.0:*:*:*:*:*:*:*",
"cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.1.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:jboss_enterprise_application_platform",
"extracted_events": [
{
"range": [
{
"introduced": "6.0.0"
},
{
"last_affected": "6.0.0"
},
{
"introduced": "7.0.0"
},
{
"last_affected": "7.0.0"
},
{
"introduced": "7.1.0"
},
{
"last_affected": "7.1.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-2670",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 435377,
"published_at": "2018-07-27T15:29:00.487+00:00"
}