HighFix available
ndpi — security advisory
In nDPI through 3.2 Stable, an out-of-bounds read in concat_hash_string in ssh.c can be exploited by a network-positioned attacker that can send malformed SSH protocol messages on a network segment monitored by nDPI's library.
- Products
- ndpi
- Affected versions
- Not specified
- Fixed versions
- 3.4-1
- CVEs
- CVE-2020-11940
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:00 UTC · Revision 1
Source evidence
In nDPI through 3.2 Stable, an out-of-bounds read in concat_hash_string in ssh.c can be exploited by a network-positioned attacker that can send malformed SSH protocol messages on a network segment monitored by nDPI's library.
osv:DEBIAN-CVE-2020-11940
ndpi
Fixed versions: 3.4-1
ndpi
Fixed versions: 3.4-1
ndpi
Fixed versions: 3.4-1
Complete source record
{
"id": "b938c39c298b2ed5003e0f4077d15633a6e1cdacee3d76792f218a8d0344082d",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-11940",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-11940",
"summary": "In nDPI through 3.2 Stable, an out-of-bounds read in concat_hash_string in ssh.c can be exploited by a network-positioned attacker that can send malformed SSH protocol messages on a network segment monitored by nDPI's library.",
"evidence": "osv:DEBIAN-CVE-2020-11940",
"products": [
{
"name": {
"value": "ndpi",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.4-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "ndpi",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.4-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "ndpi",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.4-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2020-11940",
"aliases": [
"DEBIAN-CVE-2020-11940"
],
"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": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4-1"
}
]
}
],
"package": {
"name": "ndpi",
"purl": "pkg:deb/debian/ndpi?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-11940.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4-1"
}
]
}
],
"package": {
"name": "ndpi",
"purl": "pkg:deb/debian/ndpi?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-11940.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4-1"
}
]
}
],
"package": {
"name": "ndpi",
"purl": "pkg:deb/debian/ndpi?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-11940.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:01:25.084196024Z",
"provider": "osv",
"upstream": [
"CVE-2020-11940"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-11940"
]
},
"related_cves": [
{
"value": "CVE-2020-11940",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 451650,
"published_at": "2020-04-23T15:15:14.153+00:00"
}