UnratedFix available
cyrus-sasl2 — security advisory
digestmd5.c in the CMU Cyrus Simple Authentication and Security Layer (SASL) library 2.1.18, and possibly other versions before 2.1.21, allows remote unauthenticated attackers to cause a denial of service (segmentation fault) via malformed inputs in DIGEST-MD5 negotiation.
- Products
- cyrus-sasl2
- Affected versions
- Not specified
- Fixed versions
- 2.1.19.dfsg1-0.2
- CVEs
- CVE-2006-1721
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 20:15 UTC · Revision 1
Source evidence
digestmd5.c in the CMU Cyrus Simple Authentication and Security Layer (SASL) library 2.1.18, and possibly other versions before 2.1.21, allows remote unauthenticated attackers to cause a denial of service (segmentation fault) via malformed inputs in DIGEST-MD5 negotiation.
osv:DEBIAN-CVE-2006-1721
cyrus-sasl2
Fixed versions: 2.1.19.dfsg1-0.2
cyrus-sasl2
Fixed versions: 2.1.19.dfsg1-0.2
cyrus-sasl2
Fixed versions: 2.1.19.dfsg1-0.2
Complete source record
{
"id": "29a9ec72b315b6c3771212fb46f483f5a78e8faa43525ab757bb15aa1a50540e",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2006-1721",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2006-1721",
"summary": "digestmd5.c in the CMU Cyrus Simple Authentication and Security Layer (SASL) library 2.1.18, and possibly other versions before 2.1.21, allows remote unauthenticated attackers to cause a denial of service (segmentation fault) via malformed inputs in DIGEST-MD5 negotiation.",
"evidence": "osv:DEBIAN-CVE-2006-1721",
"products": [
{
"name": {
"value": "cyrus-sasl2",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.19.dfsg1-0.2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "cyrus-sasl2",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.19.dfsg1-0.2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "cyrus-sasl2",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.19.dfsg1-0.2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2006-1721",
"aliases": [
"DEBIAN-CVE-2006-1721"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.19.dfsg1-0.2"
}
]
}
],
"package": {
"name": "cyrus-sasl2",
"purl": "pkg:deb/debian/cyrus-sasl2?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-1721.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.19.dfsg1-0.2"
}
]
}
],
"package": {
"name": "cyrus-sasl2",
"purl": "pkg:deb/debian/cyrus-sasl2?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-1721.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.19.dfsg1-0.2"
}
]
}
],
"package": {
"name": "cyrus-sasl2",
"purl": "pkg:deb/debian/cyrus-sasl2?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-1721.json"
},
"ecosystem_specific": {
"urgency": "low"
}
}
],
"modified": "2026-10-22T23:47:27.880917414Z",
"provider": "osv",
"upstream": [
"CVE-2006-1721"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2006-1721"
]
},
"related_cves": [
{
"value": "CVE-2006-1721",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 410605,
"published_at": "2006-04-11T23:02:00+00:00"
}