zbar — security advisory
A stack-based buffer overflow vulnerability exists in the lookup_sequence function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.
- Products
- zbar
- Affected versions
- 0.23.92-7
- Fixed versions
- 0.23.92-7+deb12u1, 0.23.92-9
- CVEs
- CVE-2023-40890
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:57 UTC · Revision 1
Source evidence
A stack-based buffer overflow vulnerability exists in the lookup_sequence function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.
osv:DEBIAN-CVE-2023-40890
zbar
Fixed versions: 0.23.92-7+deb12u1
zbar
Fixed versions: 0.23.92-9
zbar
Fixed versions: 0.23.92-9
Complete source record
{
"id": "27b7359685e7141090812da25a56c9fbf86c3208b9d238b7dcc19eae3930e463",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-40890",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2023-40890",
"summary": "A stack-based buffer overflow vulnerability exists in the lookup_sequence function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.",
"evidence": "osv:DEBIAN-CVE-2023-40890",
"products": [
{
"name": {
"value": "zbar",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.23.92-7+deb12u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "0.23.92-7",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "zbar",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.23.92-9",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "zbar",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.23.92-9",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "critical",
"structured": {
"id": "DEBIAN-CVE-2023-40890",
"aliases": [
"DEBIAN-CVE-2023-40890"
],
"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": "0.23.92-7+deb12u1"
}
]
}
],
"package": {
"name": "zbar",
"purl": "pkg:deb/debian/zbar?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.23.92-7"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-40890.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.23.92-9"
}
]
}
],
"package": {
"name": "zbar",
"purl": "pkg:deb/debian/zbar?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-40890.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.23.92-9"
}
]
}
],
"package": {
"name": "zbar",
"purl": "pkg:deb/debian/zbar?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-40890.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T18:02:32.448518550Z",
"provider": "osv",
"upstream": [
"CVE-2023-40890"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2023-40890"
]
},
"related_cves": [
{
"value": "CVE-2023-40890",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 456208,
"published_at": "2023-08-29T17:15:12.917+00:00"
}