HighFix available
clamav — security advisory
ClamAV versions prior to 0.103.0-rc contain a vulnerability in function name processing through the ClamBC bytecode interpreter that allows attackers to manipulate bytecode function names. Attackers can exploit the weak input validation in function name encoding to potentially execute malicious bytecode or cause unexpected behavior in the ClamAV engine.
- Products
- clamav
- Affected versions
- Not specified
- Fixed versions
- 0.103.0+dfsg-1
- CVEs
- CVE-2020-37167
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:17 UTC · Revision 2
Source evidence
ClamAV versions prior to 0.103.0-rc contain a vulnerability in function name processing through the ClamBC bytecode interpreter that allows attackers to manipulate bytecode function names. Attackers can exploit the weak input validation in function name encoding to potentially execute malicious bytecode or cause unexpected behavior in the ClamAV engine.
osv:DEBIAN-CVE-2020-37167
clamav
Fixed versions: 0.103.0+dfsg-1
clamav
Fixed versions: 0.103.0+dfsg-1
clamav
Fixed versions: 0.103.0+dfsg-1
Complete source record
{
"id": "5fcfc1e31b3e8be385cf92f44113902731fe727154c8bfd82736ff5b47d9b61d",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-37167",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-37167",
"summary": "ClamAV versions prior to 0.103.0-rc contain a vulnerability in function name processing through the ClamBC bytecode interpreter that allows attackers to manipulate bytecode function names. Attackers can exploit the weak input validation in function name encoding to potentially execute malicious bytecode or cause unexpected behavior in the ClamAV engine.",
"evidence": "osv:DEBIAN-CVE-2020-37167",
"products": [
{
"name": {
"value": "clamav",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.103.0+dfsg-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamav",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.103.0+dfsg-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "clamav",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.103.0+dfsg-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2020-37167",
"aliases": [
"DEBIAN-CVE-2020-37167"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.103.0+dfsg-1"
}
]
}
],
"package": {
"name": "clamav",
"purl": "pkg:deb/debian/clamav?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-37167.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.103.0+dfsg-1"
}
]
}
],
"package": {
"name": "clamav",
"purl": "pkg:deb/debian/clamav?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-37167.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.103.0+dfsg-1"
}
]
}
],
"package": {
"name": "clamav",
"purl": "pkg:deb/debian/clamav?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-37167.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
],
"modified": "2026-10-26T12:02:32.130833265Z",
"provider": "osv",
"upstream": [
"CVE-2020-37167"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-37167"
]
},
"related_cves": [
{
"value": "CVE-2020-37167",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 452083,
"published_at": "2026-02-12T23:16:08.887+00:00"
}