Medium
xpdf — security advisory
The function Object::isName() in Object.h (called from Gfx::opSetFillColorN) in Xpdf 4.00 allows remote attackers to cause a denial of service (stack-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.
- Products
- xpdf
- Affected versions
- 3.04+git20220601-1, 3.04+git20231213-1, 3.04+git20240118-1, 3.04+git20240124-1, 3.04+git20240202-1, 3.04+git20240613-1, 3.04+git20250103-1, 3.04+git20250304-1, 3.04+git20260220-1, 3.04+git20260802-1
- Fixed versions
- Not specified
- CVEs
- CVE-2018-18456
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:47 UTC · Revision 1
Source evidence
The function Object::isName() in Object.h (called from Gfx::opSetFillColorN) in Xpdf 4.00 allows remote attackers to cause a denial of service (stack-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.
osv:DEBIAN-CVE-2018-18456
xpdf
Fixed versions: Not specified
xpdf
Fixed versions: Not specified
xpdf
Fixed versions: Not specified
Complete source record
{
"id": "629dd9581af21db0206d478e87853d5d9dc51b9a19465965759961c419ac66be",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-18456",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2018-18456",
"summary": "The function Object::isName() in Object.h (called from Gfx::opSetFillColorN) in Xpdf 4.00 allows remote attackers to cause a denial of service (stack-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.",
"evidence": "osv:DEBIAN-CVE-2018-18456",
"products": [
{
"name": {
"value": "xpdf",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.04+git20220601-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.04+git20231213-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.04+git20240118-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.04+git20240124-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.04+git20240202-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.04+git20240613-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.04+git20250103-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.04+git20250304-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.04+git20260220-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.04+git20260802-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "xpdf",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.04+git20250304-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.04+git20260220-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.04+git20260802-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "xpdf",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.04+git20250304-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.04+git20260220-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.04+git20260802-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2018-18456",
"aliases": [
"DEBIAN-CVE-2018-18456"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "xpdf",
"purl": "pkg:deb/debian/xpdf?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.04+git20220601-1",
"3.04+git20231213-1",
"3.04+git20240118-1",
"3.04+git20240124-1",
"3.04+git20240202-1",
"3.04+git20240613-1",
"3.04+git20250103-1",
"3.04+git20250304-1",
"3.04+git20260220-1",
"3.04+git20260802-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-18456.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "xpdf",
"purl": "pkg:deb/debian/xpdf?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.04+git20250304-1",
"3.04+git20260220-1",
"3.04+git20260802-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-18456.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "xpdf",
"purl": "pkg:deb/debian/xpdf?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.04+git20250304-1",
"3.04+git20260220-1",
"3.04+git20260802-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-18456.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
],
"modified": "2026-10-23T18:03:47.662478824Z",
"provider": "osv",
"upstream": [
"CVE-2018-18456"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-18456"
]
},
"related_cves": [
{
"value": "CVE-2018-18456",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 422254,
"published_at": "2018-10-18T06:29:00.527+00:00"
}