UnratedFix available
krb5 — security advisory
The RPC library in Kerberos 5 1.4 through 1.4.4, and 1.5 through 1.5.1, as used in Kerberos administration daemon (kadmind) and other products that use this library, calls an uninitialized function pointer in freed memory, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.
- Products
- krb5
- Affected versions
- Not specified
- Fixed versions
- 1.4.4-6
- CVEs
- CVE-2006-6143
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 20:17 UTC · Revision 1
Source evidence
The RPC library in Kerberos 5 1.4 through 1.4.4, and 1.5 through 1.5.1, as used in Kerberos administration daemon (kadmind) and other products that use this library, calls an uninitialized function pointer in freed memory, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.
osv:DEBIAN-CVE-2006-6143
krb5
Fixed versions: 1.4.4-6
krb5
Fixed versions: 1.4.4-6
krb5
Fixed versions: 1.4.4-6
Complete source record
{
"id": "004fbbcc594ee55ee2595f6363840a8642a149fc1c204b0eacf5a72c74f3716f",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2006-6143",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2006-6143",
"summary": "The RPC library in Kerberos 5 1.4 through 1.4.4, and 1.5 through 1.5.1, as used in Kerberos administration daemon (kadmind) and other products that use this library, calls an uninitialized function pointer in freed memory, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.",
"evidence": "osv:DEBIAN-CVE-2006-6143",
"products": [
{
"name": {
"value": "krb5",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.4.4-6",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "krb5",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.4.4-6",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "krb5",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.4.4-6",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2006-6143",
"aliases": [
"DEBIAN-CVE-2006-6143"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.4-6"
}
]
}
],
"package": {
"name": "krb5",
"purl": "pkg:deb/debian/krb5?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-6143.json"
},
"ecosystem_specific": {
"urgency": "high"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.4-6"
}
]
}
],
"package": {
"name": "krb5",
"purl": "pkg:deb/debian/krb5?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-6143.json"
},
"ecosystem_specific": {
"urgency": "high"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.4-6"
}
]
}
],
"package": {
"name": "krb5",
"purl": "pkg:deb/debian/krb5?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-6143.json"
},
"ecosystem_specific": {
"urgency": "high"
}
}
],
"modified": "2026-10-22T23:47:29.851026698Z",
"provider": "osv",
"upstream": [
"CVE-2006-6143"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2006-6143"
]
},
"related_cves": [
{
"value": "CVE-2006-6143",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 410693,
"published_at": "2006-12-31T05:00:00+00:00"
}