MediumFix available
tcpreplay — security advisory
A heap-based buffer over-read was discovered in the tcpreplay-edit binary of Tcpreplay 4.3.0 beta1, during the incremental checksum operation. The issue gets triggered in the function csum_replace4() in incremental_checksum.h, causing a denial of service.
- Products
- tcpreplay
- Affected versions
- Not specified
- Fixed versions
- 4.3.1-1
- CVEs
- CVE-2018-18407
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:55 UTC · Revision 1
Source evidence
A heap-based buffer over-read was discovered in the tcpreplay-edit binary of Tcpreplay 4.3.0 beta1, during the incremental checksum operation. The issue gets triggered in the function csum_replace4() in incremental_checksum.h, causing a denial of service.
osv:DEBIAN-CVE-2018-18407
tcpreplay
Fixed versions: 4.3.1-1
tcpreplay
Fixed versions: 4.3.1-1
tcpreplay
Fixed versions: 4.3.1-1
Complete source record
{
"id": "b23443ed8dec0d69071be984b539900ffa13e84e9110f504fb27c245a280ed48",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-18407",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2018-18407",
"summary": "A heap-based buffer over-read was discovered in the tcpreplay-edit binary of Tcpreplay 4.3.0 beta1, during the incremental checksum operation. The issue gets triggered in the function csum_replace4() in incremental_checksum.h, causing a denial of service.",
"evidence": "osv:DEBIAN-CVE-2018-18407",
"products": [
{
"name": {
"value": "tcpreplay",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.3.1-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "tcpreplay",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.3.1-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "tcpreplay",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.3.1-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2018-18407",
"aliases": [
"DEBIAN-CVE-2018-18407"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.1-1"
}
]
}
],
"package": {
"name": "tcpreplay",
"purl": "pkg:deb/debian/tcpreplay?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-18407.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.1-1"
}
]
}
],
"package": {
"name": "tcpreplay",
"purl": "pkg:deb/debian/tcpreplay?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-18407.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.1-1"
}
]
}
],
"package": {
"name": "tcpreplay",
"purl": "pkg:deb/debian/tcpreplay?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-18407.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:03:56.132722409Z",
"provider": "osv",
"upstream": [
"CVE-2018-18407"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-18407"
]
},
"related_cves": [
{
"value": "CVE-2018-18407",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 422671,
"published_at": "2018-10-17T04:29:00.643+00:00"
}