High
Security advisory
Infinite loop in the BitTorrent DHT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-4184
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:50 UTC · Revision 1
Source evidence
Infinite loop in the BitTorrent DHT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
osv:CVE-2021-4184
Complete source record
{
"id": "16eaaa0d9eb1c1f18cfd411ec716c7790489d76419d7f41f6599b29e92eaeff6",
"url": "https://osv.dev/vulnerability/CVE-2021-4184",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-4184",
"summary": "Infinite loop in the BitTorrent DHT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file",
"evidence": "osv:CVE-2021-4184",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2021-4184",
"aliases": [
"CVE-2021-4184"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "9733f173ea5e6255e8da208ef183210aa264d948"
},
{
"last_affected": "733b3a137c2ba8c8e517e5fb37bcc3030a43d603"
},
{
"introduced": "3a34e44d02c9c91f9f851bd6f29ff4505131b127"
},
{
"last_affected": "3a34e44d02c9c91f9f851bd6f29ff4505131b127"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.4.0"
},
{
"last_affected": "3.4.10"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:wireshark:wireshark:3.6.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.6.0"
},
{
"last_affected": "3.6.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.6.0",
"wireshark-3.6.0",
"v3.6.0",
"wireshark-3.4.10",
"v3.4.10",
"v3.4.10rc0",
"wireshark-3.4.9",
"v3.4.9",
"v3.4.9rc0",
"wireshark-3.4.8",
"v3.4.8",
"v3.4.8rc0",
"wireshark-3.4.7",
"v3.4.7",
"v3.4.7rc0",
"wireshark-3.4.6",
"v3.4.6",
"v3.4.6rc0",
"wireshark-3.4.5",
"v3.4.5",
"v3.4.5rc0",
"wireshark-3.4.4",
"v3.4.4",
"v3.4.4rc0",
"wireshark-3.4.3",
"v3.4.3",
"v3.4.3rc0",
"wireshark-3.4.2",
"v3.4.2",
"v3.4.2rc0",
"wireshark-3.4.1",
"v3.4.1",
"v3.4.1rc0",
"wireshark-3.4.0",
"v3.4.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4184.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "9733f173ea5e6255e8da208ef183210aa264d948"
},
{
"last_affected": "733b3a137c2ba8c8e517e5fb37bcc3030a43d603"
},
{
"introduced": "3a34e44d02c9c91f9f851bd6f29ff4505131b127"
},
{
"last_affected": "3a34e44d02c9c91f9f851bd6f29ff4505131b127"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.4.0"
},
{
"last_affected": "3.4.10"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:wireshark:wireshark:3.6.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.6.0"
},
{
"last_affected": "3.6.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.6.0",
"wireshark-3.6.0",
"v3.6.0",
"wireshark-3.4.10",
"v3.4.10",
"v3.4.10rc0",
"wireshark-3.4.9",
"v3.4.9",
"v3.4.9rc0",
"wireshark-3.4.8",
"v3.4.8",
"v3.4.8rc0",
"wireshark-3.4.7",
"v3.4.7",
"v3.4.7rc0",
"wireshark-3.4.6",
"v3.4.6",
"v3.4.6rc0",
"wireshark-3.4.5",
"v3.4.5",
"v3.4.5rc0",
"wireshark-3.4.4",
"v3.4.4",
"v3.4.4rc0",
"wireshark-3.4.3",
"v3.4.3",
"v3.4.3rc0",
"wireshark-3.4.2",
"v3.4.2",
"v3.4.2rc0",
"wireshark-3.4.1",
"v3.4.1",
"v3.4.1rc0",
"wireshark-3.4.0",
"v3.4.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4184.json"
}
}
],
"modified": "2026-10-24T10:50:25.863585358Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ/",
"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4184.json",
"https://lists.debian.org/debian-lts-announce/2022/03/msg00041.html",
"https://security.gentoo.org/glsa/202210-04",
"https://www.oracle.com/security-alerts/cpuapr2022.html",
"https://www.wireshark.org/security/wnpa-sec-2021-18.html",
"https://gitlab.com/wireshark/wireshark/-/issues/17754"
],
"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:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "34"
},
{
"last_affected": "34"
},
{
"introduced": "35"
},
{
"last_affected": "35"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*",
"cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:http_server",
"extracted_events": [
{
"range": [
{
"introduced": "12.2.1.3.0"
},
{
"last_affected": "12.2.1.3.0"
},
{
"introduced": "12.2.1.4.0"
},
{
"last_affected": "12.2.1.4.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:zfs_storage_appliance_kit",
"extracted_events": [
{
"range": [
{
"introduced": "8.8"
},
{
"last_affected": "8.8"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2021-4184",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442166,
"published_at": "2021-12-30T22:15:10.307+00:00"
}