net-snmp — security advisory
The netsnmp_udp_fmtaddr function (snmplib/snmpUDPDomain.c) in net-snmp 5.0.9 through 5.4.2.1, when using TCP wrappers for client authorization, does not properly parse hosts.allow rules, which allows remote attackers to bypass intended access restrictions and execute SNMP queries, related to "source/destination IP address confusion."
- Products
- net-snmp
- Affected versions
- Not specified
- Fixed versions
- 5.4.3~dfsg-1
- CVEs
- CVE-2008-6123
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 23:03 UTC · Revision 1
Source evidence
The netsnmp_udp_fmtaddr function (snmplib/snmpUDPDomain.c) in net-snmp 5.0.9 through 5.4.2.1, when using TCP wrappers for client authorization, does not properly parse hosts.allow rules, which allows remote attackers to bypass intended access restrictions and execute SNMP queries, related to "source/destination IP address confusion."
osv:DEBIAN-CVE-2008-6123
net-snmp
Fixed versions: 5.4.3~dfsg-1
net-snmp
Fixed versions: 5.4.3~dfsg-1
net-snmp
Fixed versions: 5.4.3~dfsg-1
Complete source record
{
"id": "802666d8b0c0de6cbaee1d9ac68be048973a256c608009e015fc7db6909558eb",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2008-6123",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2008-6123",
"summary": "The netsnmp_udp_fmtaddr function (snmplib/snmpUDPDomain.c) in net-snmp 5.0.9 through 5.4.2.1, when using TCP wrappers for client authorization, does not properly parse hosts.allow rules, which allows remote attackers to bypass intended access restrictions and execute SNMP queries, related to \"source/destination IP address confusion.\"",
"evidence": "osv:DEBIAN-CVE-2008-6123",
"products": [
{
"name": {
"value": "net-snmp",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.4.3~dfsg-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "net-snmp",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.4.3~dfsg-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "net-snmp",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.4.3~dfsg-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2008-6123",
"aliases": [
"DEBIAN-CVE-2008-6123"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.4.3~dfsg-1"
}
]
}
],
"package": {
"name": "net-snmp",
"purl": "pkg:deb/debian/net-snmp?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2008-6123.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.4.3~dfsg-1"
}
]
}
],
"package": {
"name": "net-snmp",
"purl": "pkg:deb/debian/net-snmp?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2008-6123.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.4.3~dfsg-1"
}
]
}
],
"package": {
"name": "net-snmp",
"purl": "pkg:deb/debian/net-snmp?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2008-6123.json"
},
"ecosystem_specific": {
"urgency": "low"
}
}
],
"modified": "2026-10-23T17:47:33.560614433Z",
"provider": "osv",
"upstream": [
"CVE-2008-6123"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2008-6123"
]
},
"related_cves": [
{
"value": "CVE-2008-6123",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 417617,
"published_at": "2009-02-12T16:30:00.187+00:00"
}