UBUNTU-CVE-2023-20197 (CVE-2023-20197)
Vulnerability from osv_ubuntu – Published: 2023-08-17 00:00 – Updated: 2026-04-22 07:45 – Source website
VLAI
Details
A vulnerability in the filesystem image parser for Hierarchical File System Plus (HFS+) of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an incorrect check for completion when a file is decompressed, which may result in a loop condition that could cause the affected software to stop responding. An attacker could exploit this vulnerability by submitting a crafted HFS+ filesystem image to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to stop responding, resulting in a DoS condition on the affected software and consuming available system resources. For a description of this vulnerability, see the ClamAV blog .
Severity
7.5 (High)
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "clamav",
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{
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},
{
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},
{
"binary_name": "clamav-docs",
"binary_version": "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
},
{
"binary_name": "clamav-freshclam",
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},
{
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},
{
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},
{
"binary_name": "libclamav9",
"binary_version": "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
}
]
},
"package": {
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},
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{
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"0.100.2+dfsg-1ubuntu0.14.04.2",
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"0.103.2+dfsg-0ubuntu0.14.04.1+esm1",
"0.103.2+dfsg-0ubuntu0.14.04.1+esm2",
"0.103.5+dfsg-0ubuntu0.14.04.1+esm1",
"0.103.6+dfsg-0ubuntu0.14.04.1+esm1",
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]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "clamav",
"binary_version": "0.103.9+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-base",
"binary_version": "0.103.9+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-daemon",
"binary_version": "0.103.9+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-docs",
"binary_version": "0.103.9+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-freshclam",
"binary_version": "0.103.9+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-milter",
"binary_version": "0.103.9+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-testfiles",
"binary_version": "0.103.9+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamdscan",
"binary_version": "0.103.9+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "libclamav9",
"binary_version": "0.103.9+dfsg-0ubuntu0.16.04.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "clamav",
"purl": "pkg:deb/ubuntu/clamav@0.103.9+dfsg-0ubuntu0.16.04.1+esm1?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
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{
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},
{
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}
],
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}
],
"versions": [
"0.98.7+dfsg-0ubuntu4",
"0.98.7+dfsg-0ubuntu5",
"0.99+dfsg-1ubuntu1",
"0.99+dfsg-1ubuntu1.1",
"0.99+dfsg-1ubuntu1.2",
"0.99.2+dfsg-0ubuntu0.16.04.1",
"0.99.2+dfsg-0ubuntu0.16.04.2",
"0.99.2+dfsg-0ubuntu0.16.04.3",
"0.99.3+addedllvm-0ubuntu0.16.04.1",
"0.99.4+addedllvm-0ubuntu0.16.04.1",
"0.100.1+dfsg-1ubuntu0.16.04.1",
"0.100.1+dfsg-1ubuntu0.16.04.2",
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},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "clamav",
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},
{
"binary_name": "clamav-base",
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{
"binary_name": "clamav-daemon",
"binary_version": "0.103.9+dfsg-0ubuntu0.18.04.1+esm1"
},
{
"binary_name": "clamav-docs",
"binary_version": "0.103.9+dfsg-0ubuntu0.18.04.1+esm1"
},
{
"binary_name": "clamav-freshclam",
"binary_version": "0.103.9+dfsg-0ubuntu0.18.04.1+esm1"
},
{
"binary_name": "clamav-milter",
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},
{
"binary_name": "clamav-testfiles",
"binary_version": "0.103.9+dfsg-0ubuntu0.18.04.1+esm1"
},
{
"binary_name": "clamdscan",
"binary_version": "0.103.9+dfsg-0ubuntu0.18.04.1+esm1"
},
{
"binary_name": "libclamav9",
"binary_version": "0.103.9+dfsg-0ubuntu0.18.04.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "clamav",
"purl": "pkg:deb/ubuntu/clamav@0.103.9+dfsg-0ubuntu0.18.04.1+esm1?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
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}
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"type": "ECOSYSTEM"
}
],
"versions": [
"0.99.2+dfsg-6ubuntu2",
"0.99.3~beta1+dfsg-2ubuntu1",
"0.99.3~beta1+dfsg-2ubuntu2",
"0.99.3+addedllvm-0ubuntu1",
"0.99.3+addedllvm-0ubuntu2",
"0.99.4+addedllvm-0ubuntu1",
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"0.100.1+dfsg-1ubuntu0.18.04.2",
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]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "clamav",
"binary_version": "0.103.9+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "clamav-base",
"binary_version": "0.103.9+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "clamav-daemon",
"binary_version": "0.103.9+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "clamav-docs",
"binary_version": "0.103.9+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "clamav-freshclam",
"binary_version": "0.103.9+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "clamav-milter",
"binary_version": "0.103.9+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "clamav-testfiles",
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},
{
"binary_name": "clamdscan",
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{
"binary_name": "libclamav9",
"binary_version": "0.103.9+dfsg-0ubuntu0.20.04.1"
}
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"package": {
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"name": "clamav",
"purl": "pkg:deb/ubuntu/clamav@0.103.9+dfsg-0ubuntu0.20.04.1?arch=source\u0026distro=focal"
},
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"0.102.1+dfsg-1ubuntu1",
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},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "clamav",
"binary_version": "0.103.9+dfsg-0ubuntu0.22.04.1"
},
{
"binary_name": "clamav-base",
"binary_version": "0.103.9+dfsg-0ubuntu0.22.04.1"
},
{
"binary_name": "clamav-daemon",
"binary_version": "0.103.9+dfsg-0ubuntu0.22.04.1"
},
{
"binary_name": "clamav-docs",
"binary_version": "0.103.9+dfsg-0ubuntu0.22.04.1"
},
{
"binary_name": "clamav-freshclam",
"binary_version": "0.103.9+dfsg-0ubuntu0.22.04.1"
},
{
"binary_name": "clamav-milter",
"binary_version": "0.103.9+dfsg-0ubuntu0.22.04.1"
},
{
"binary_name": "clamav-testfiles",
"binary_version": "0.103.9+dfsg-0ubuntu0.22.04.1"
},
{
"binary_name": "clamdscan",
"binary_version": "0.103.9+dfsg-0ubuntu0.22.04.1"
},
{
"binary_name": "libclamav9",
"binary_version": "0.103.9+dfsg-0ubuntu0.22.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "clamav",
"purl": "pkg:deb/ubuntu/clamav@0.103.9+dfsg-0ubuntu0.22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
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],
"versions": [
"0.103.3+dfsg-1",
"0.103.4+dfsg-1",
"0.103.4+dfsg-1build1",
"0.103.5+dfsg-1",
"0.103.6+dfsg-0ubuntu0.22.04.1",
"0.103.8+dfsg-0ubuntu0.22.04.1"
]
}
],
"aliases": [],
"details": "A vulnerability in the filesystem image parser for Hierarchical File System Plus (HFS+) of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an incorrect check for completion when a file is decompressed, which may result in a loop condition that could cause the affected software to stop responding. An attacker could exploit this vulnerability by submitting a crafted HFS+ filesystem image to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to stop responding, resulting in a DoS condition on the affected software and consuming available system resources. For a description of this vulnerability, see the ClamAV blog .",
"id": "UBUNTU-CVE-2023-20197",
"modified": "2026-04-22T07:45:12Z",
"published": "2023-08-17T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-20197"
},
{
"type": "REPORT",
"url": "https://blog.clamav.net/2023/07/2023-08-16-releases.html"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6303-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6303-2"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-20197"
}
],
"related": [
"USN-6303-1",
"USN-6303-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2023-20197"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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