MediumFix available
busybox — security advisory
A use-after-free vulnerability was discovered in BusyBox v.1.36.1 via a crafted awk pattern in the awk.c copyvar function.
- Products
- busybox
- Affected versions
- Not specified
- Fixed versions
- 1.35.0-r31, 1.36.1-r19, 1.36.1-r29, 1.36.1-r30, 1.36.1-r7
- CVEs
- CVE-2023-42365
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:00 UTC · Revision 1
Source evidence
A use-after-free vulnerability was discovered in BusyBox v.1.36.1 via a crafted awk pattern in the awk.c copyvar function.
osv:ALPINE-CVE-2023-42365
busybox
Fixed versions: 1.35.0-r31
busybox
Fixed versions: 1.36.1-r7
busybox
Fixed versions: 1.36.1-r19
busybox
Fixed versions: 1.36.1-r29
busybox
Fixed versions: 1.36.1-r30
busybox
Fixed versions: 1.36.1-r30
busybox
Fixed versions: 1.36.1-r30
busybox
Fixed versions: 1.36.1-r30
Complete source record
{
"id": "1227f1d3f707898576f8bd79726924ee4b5a4259d3020f55bba94d98ea5b0d62",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2023-42365",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2023-42365",
"summary": "A use-after-free vulnerability was discovered in BusyBox v.1.36.1 via a crafted awk pattern in the awk.c copyvar function.",
"evidence": "osv:ALPINE-CVE-2023-42365",
"products": [
{
"name": {
"value": "busybox",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.35.0-r31",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "busybox",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.36.1-r7",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "busybox",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.36.1-r19",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "busybox",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.36.1-r29",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "busybox",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.36.1-r30",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "busybox",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.36.1-r30",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "busybox",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.36.1-r30",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "busybox",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.36.1-r30",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2023-42365",
"aliases": [
"ALPINE-CVE-2023-42365"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.35.0-r31"
}
]
}
],
"package": {
"name": "busybox",
"purl": "pkg:apk/alpine/busybox?arch=source",
"ecosystem": "Alpine:v3.17"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-42365.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.36.1-r7"
}
]
}
],
"package": {
"name": "busybox",
"purl": "pkg:apk/alpine/busybox?arch=source",
"ecosystem": "Alpine:v3.18"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-42365.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.36.1-r19"
}
]
}
],
"package": {
"name": "busybox",
"purl": "pkg:apk/alpine/busybox?arch=source",
"ecosystem": "Alpine:v3.19"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-42365.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.36.1-r29"
}
]
}
],
"package": {
"name": "busybox",
"purl": "pkg:apk/alpine/busybox?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-42365.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.36.1-r30"
}
]
}
],
"package": {
"name": "busybox",
"purl": "pkg:apk/alpine/busybox?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-42365.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.36.1-r30"
}
]
}
],
"package": {
"name": "busybox",
"purl": "pkg:apk/alpine/busybox?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-42365.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.36.1-r30"
}
]
}
],
"package": {
"name": "busybox",
"purl": "pkg:apk/alpine/busybox?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-42365.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.36.1-r30"
}
]
}
],
"package": {
"name": "busybox",
"purl": "pkg:apk/alpine/busybox?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-42365.json"
},
"ecosystem_specific": {}
}
],
"modified": "2026-10-26T17:17:58.640428905Z",
"provider": "osv",
"upstream": [
"CVE-2023-42365"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2023-42365"
]
},
"related_cves": [
{
"value": "CVE-2023-42365",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 454495,
"published_at": "2023-11-27T23:15:07.373+00:00"
}