CriticalFix available
minizip, zlib — security advisory
MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.
- Products
- minizip, zlib
- Affected versions
- 1.1-8, 1:1.2.13.dfsg-1, 1:1.2.13.dfsg-2, 1:1.2.13.dfsg-3, 1:1.3.dfsg+really1.3.1-1, 1:1.3.dfsg+really1.3.1-2, 1:1.3.dfsg+really1.3.1-3, 1:1.3.dfsg+really1.3.2-1, 1:1.3.dfsg+really1.3.2-2, 1:1.3.dfsg+really1.3.2-3, 1:1.3.dfsg+really1.3.2-4, 1:1.3.dfsg-1, 1:1.3.dfsg-2, 1:1.3.dfsg-3, 1:1.3.dfsg-3.1, 1:1.3.dfsg-3.1~exp1
- Fixed versions
- 1.1-8+deb12u1, 1:1.3.dfsg-2
- CVEs
- CVE-2023-45853
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:59 UTC · Revision 1
Source evidence
MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.
osv:DEBIAN-CVE-2023-45853
minizip
Fixed versions: 1.1-8+deb12u1
zlib
Fixed versions: Not specified
zlib
Fixed versions: 1:1.3.dfsg-2
zlib
Fixed versions: 1:1.3.dfsg-2
Complete source record
{
"id": "53fc7abb9bcf949d3f65f5c22a4a9d5871b3c109c35fac6faa3e3fa241efce40",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-45853",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2023-45853",
"summary": "MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.",
"evidence": "osv:DEBIAN-CVE-2023-45853",
"products": [
{
"name": {
"value": "minizip",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.1-8+deb12u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "1.1-8",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "zlib",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.2.13.dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.2.13.dfsg-2",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.2.13.dfsg-3",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg+really1.3.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg+really1.3.1-2",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg+really1.3.1-3",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg+really1.3.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg+really1.3.2-2",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg+really1.3.2-3",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg+really1.3.2-4",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg-2",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg-3",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg-3.1",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.3.dfsg-3.1~exp1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "zlib",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.3.dfsg-2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "zlib",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.3.dfsg-2",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
}
],
"severity": "critical",
"structured": {
"id": "DEBIAN-CVE-2023-45853",
"aliases": [
"DEBIAN-CVE-2023-45853"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1-8+deb12u1"
}
]
}
],
"package": {
"name": "minizip",
"purl": "pkg:deb/debian/minizip?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.1-8"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-45853.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/debian/zlib?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1:1.2.13.dfsg-1",
"1:1.2.13.dfsg-2",
"1:1.2.13.dfsg-3",
"1:1.3.dfsg+really1.3.1-1",
"1:1.3.dfsg+really1.3.1-2",
"1:1.3.dfsg+really1.3.1-3",
"1:1.3.dfsg+really1.3.2-1",
"1:1.3.dfsg+really1.3.2-2",
"1:1.3.dfsg+really1.3.2-3",
"1:1.3.dfsg+really1.3.2-4",
"1:1.3.dfsg-1",
"1:1.3.dfsg-2",
"1:1.3.dfsg-3",
"1:1.3.dfsg-3.1",
"1:1.3.dfsg-3.1~exp1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-45853.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.3.dfsg-2"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/debian/zlib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-45853.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.3.dfsg-2"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/debian/zlib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-45853.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T18:02:35.534653702Z",
"provider": "osv",
"upstream": [
"CVE-2023-45853"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2023-45853"
]
},
"related_cves": [
{
"value": "CVE-2023-45853",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 456319,
"published_at": "2023-10-14T02:15:09.323+00:00"
}