sendmail — security advisory
The prescan() function in the address parser (parseaddr.c) in Sendmail before 8.12.9 does not properly handle certain conversions from char and int types, which can cause a length check to be disabled when Sendmail misinterprets an input value as a special "NOCHAR" control value, allowing attackers to cause a denial of service and possibly execute arbitrary code via a buffer overflow attack using messages, a different vulnerability than CVE-2002-1337.
- Products
- sendmail
- Affected versions
- Not specified
- Fixed versions
- 8.12.9-1
- CVEs
- CVE-2003-0161
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 20:10 UTC · Revision 1
Source evidence
The prescan() function in the address parser (parseaddr.c) in Sendmail before 8.12.9 does not properly handle certain conversions from char and int types, which can cause a length check to be disabled when Sendmail misinterprets an input value as a special "NOCHAR" control value, allowing attackers to cause a denial of service and possibly execute arbitrary code via a buffer overflow attack using messages, a different vulnerability than CVE-2002-1337.
osv:DEBIAN-CVE-2003-0161
sendmail
Fixed versions: 8.12.9-1
sendmail
Fixed versions: 8.12.9-1
sendmail
Fixed versions: 8.12.9-1
Complete source record
{
"id": "f3cf4a57574be3a677e3bf6e57c4746d37402a89082e0133a9a5038ccd55d885",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2003-0161",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2003-0161",
"summary": "The prescan() function in the address parser (parseaddr.c) in Sendmail before 8.12.9 does not properly handle certain conversions from char and int types, which can cause a length check to be disabled when Sendmail misinterprets an input value as a special \"NOCHAR\" control value, allowing attackers to cause a denial of service and possibly execute arbitrary code via a buffer overflow attack using messages, a different vulnerability than CVE-2002-1337.",
"evidence": "osv:DEBIAN-CVE-2003-0161",
"products": [
{
"name": {
"value": "sendmail",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.12.9-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "sendmail",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.12.9-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "sendmail",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.12.9-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2003-0161",
"aliases": [
"DEBIAN-CVE-2003-0161"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.12.9-1"
}
]
}
],
"package": {
"name": "sendmail",
"purl": "pkg:deb/debian/sendmail?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2003-0161.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.12.9-1"
}
]
}
],
"package": {
"name": "sendmail",
"purl": "pkg:deb/debian/sendmail?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2003-0161.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.12.9-1"
}
]
}
],
"package": {
"name": "sendmail",
"purl": "pkg:deb/debian/sendmail?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2003-0161.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-22T23:47:20.931805214Z",
"provider": "osv",
"upstream": [
"CVE-2003-0161"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2003-0161"
]
},
"related_cves": [
{
"value": "CVE-2003-0161",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 410287,
"published_at": "2003-04-02T05:00:00+00:00"
}