Security advisory
The ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of input validation checking mechanisms during certain mail parsing operations (mbox.c operations on bounce messages). If successfully exploited, the ClamAV software could allow a variable pointing to the mail body which could cause a used after being free (use-after-free) instance which may lead to a disruption of services on an affected device to include a denial of service condition.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-12374
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:32 UTC · Revision 1
Source evidence
The ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of input validation checking mechanisms during certain mail parsing operations (mbox.c operations on bounce messages). If successfully exploited, the ClamAV software could allow a variable pointing to the mail body which could cause a used after being free (use-after-free) instance which may lead to a disruption of services on an affected device to include a denial of service condition.
osv:CVE-2017-12374
Complete source record
{
"id": "f774812b77a62b11407535ced57acfc5fd98fdae5669601adea2c08d5f74c848",
"url": "https://osv.dev/vulnerability/CVE-2017-12374",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-12374",
"summary": "The ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of input validation checking mechanisms during certain mail parsing operations (mbox.c operations on bounce messages). If successfully exploited, the ClamAV software could allow a variable pointing to the mail body which could cause a used after being free (use-after-free) instance which may lead to a disruption of services on an affected device to include a denial of service condition.",
"evidence": "osv:CVE-2017-12374",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-12374",
"aliases": [
"CVE-2017-12374"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/cisco-talos/clamav",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "5ceae552829ee65c9ecff8ff303b1f2ddfd11576"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "0.99.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"clamav-0.99.2",
"clamav-0.97",
"clamav-0.97rc",
"clamav-0.96.5",
"clamav-0.96.4",
"clamav-0.96.3",
"clamav-0.96.2",
"clamav-0.96",
"clamav-0.96rc2",
"clamav-0.96rc1",
"merge-llvm-97877",
"r5076"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-12374.json"
}
}
],
"modified": "2026-10-24T10:30:19.710761683Z",
"provider": "osv",
"references": [
"https://usn.ubuntu.com/3550-1/",
"https://usn.ubuntu.com/3550-2/",
"https://lists.debian.org/debian-lts-announce/2018/01/msg00035.html",
"https://bugzilla.clamav.net/show_bug.cgi?id=11939"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-12374",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 430091,
"published_at": "2018-01-26T20:29:00.283+00:00"
}