USN-4918-3
Vulnerability from osv_ubuntu – Published: 2021-05-03 22:20 – Updated: 2026-06-29 10:52 – Source website
VLAI
Summary
clamav regression
Details
USN-4918-1 fixed vulnerabilities in ClamAV. The updated package could fail to properly scan in some situations. This update fixes the problem.
Original advisory details:
It was discovered that ClamAV incorrectly handled parsing Excel documents. A remote attacker could possibly use this issue to cause ClamAV to hang, resulting in a denial of service. (CVE-2021-1252)
It was discovered that ClamAV incorrectly handled parsing PDF documents. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2021-1404)
It was discovered that ClamAV incorrectly handled parsing email. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2021-1405)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "clamav",
"binary_version": "0.103.2+dfsg-0ubuntu0.14.04.1+esm2"
},
{
"binary_name": "clamav-base",
"binary_version": "0.103.2+dfsg-0ubuntu0.14.04.1+esm2"
},
{
"binary_name": "clamav-daemon",
"binary_version": "0.103.2+dfsg-0ubuntu0.14.04.1+esm2"
},
{
"binary_name": "clamav-docs",
"binary_version": "0.103.2+dfsg-0ubuntu0.14.04.1+esm2"
},
{
"binary_name": "clamav-freshclam",
"binary_version": "0.103.2+dfsg-0ubuntu0.14.04.1+esm2"
},
{
"binary_name": "clamav-milter",
"binary_version": "0.103.2+dfsg-0ubuntu0.14.04.1+esm2"
},
{
"binary_name": "clamav-testfiles",
"binary_version": "0.103.2+dfsg-0ubuntu0.14.04.1+esm2"
},
{
"binary_name": "libclamav9",
"binary_version": "0.103.2+dfsg-0ubuntu0.14.04.1+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "clamav",
"purl": "pkg:deb/ubuntu/clamav@0.103.2+dfsg-0ubuntu0.14.04.1+esm2?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.103.2+dfsg-0ubuntu0.14.04.1+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.97.8+dfsg-1ubuntu4",
"0.97.8+dfsg-1ubuntu5",
"0.98.1+dfsg-1ubuntu4",
"0.98.1+dfsg-1ubuntu5",
"0.98.1+dfsg-2ubuntu2",
"0.98.1+dfsg-4ubuntu1",
"0.98.1+dfsg-4ubuntu1.1",
"0.98.5+addedllvm-0ubuntu0.14.04.1",
"0.98.6+dfsg-0ubuntu0.14.04.1",
"0.98.7+dfsg-0ubuntu0.14.04.1",
"0.99.2+addedllvm-0ubuntu0.14.04.1",
"0.99.2+addedllvm-0ubuntu0.14.04.2",
"0.99.3+addedllvm-0ubuntu0.14.04.1",
"0.99.4+addedllvm-0ubuntu0.14.04.1",
"0.100.1+dfsg-1ubuntu0.14.04.1",
"0.100.1+dfsg-1ubuntu0.14.04.2",
"0.100.1+dfsg-1ubuntu0.14.04.3",
"0.100.1+dfsg-1ubuntu0.14.04.4",
"0.100.2+dfsg-1ubuntu0.14.04.1",
"0.100.2+dfsg-1ubuntu0.14.04.2",
"0.100.3+dfsg-0ubuntu0.14.04.1",
"0.100.3+dfsg-0ubuntu0.14.04.1+esm1",
"0.101.4+dfsg-0ubuntu0.14.04.1+esm1",
"0.102.1+dfsg-0ubuntu0.14.04.1+esm1",
"0.102.2+dfsg-0ubuntu0.14.04.1+esm1",
"0.102.3+dfsg-0ubuntu0.14.04.1+esm1",
"0.102.4+dfsg-0ubuntu0.14.04.1+esm1",
"0.103.2+dfsg-0ubuntu0.14.04.1+esm1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "clamav",
"binary_version": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-base",
"binary_version": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-daemon",
"binary_version": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-docs",
"binary_version": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-freshclam",
"binary_version": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-milter",
"binary_version": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamav-testfiles",
"binary_version": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "clamdscan",
"binary_version": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
},
{
"binary_name": "libclamav9",
"binary_version": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "clamav",
"purl": "pkg:deb/ubuntu/clamav@0.103.2+dfsg-0ubuntu0.16.04.1+esm1?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.103.2+dfsg-0ubuntu0.16.04.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"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",
"0.100.1+dfsg-1ubuntu0.16.04.3",
"0.100.2+dfsg-1ubuntu0.16.04.1",
"0.100.3+dfsg-0ubuntu0.16.04.1",
"0.101.4+dfsg-0ubuntu0.16.04.1",
"0.102.1+dfsg-0ubuntu0.16.04.2",
"0.102.2+dfsg-0ubuntu0.16.04.1",
"0.102.3+dfsg-0ubuntu0.16.04.1",
"0.102.4+dfsg-0ubuntu0.16.04.1",
"0.103.2+dfsg-0ubuntu0.16.04.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "clamav",
"binary_version": "0.103.2+dfsg-0ubuntu0.18.04.2"
},
{
"binary_name": "clamav-base",
"binary_version": "0.103.2+dfsg-0ubuntu0.18.04.2"
},
{
"binary_name": "clamav-daemon",
"binary_version": "0.103.2+dfsg-0ubuntu0.18.04.2"
},
{
"binary_name": "clamav-docs",
"binary_version": "0.103.2+dfsg-0ubuntu0.18.04.2"
},
{
"binary_name": "clamav-freshclam",
"binary_version": "0.103.2+dfsg-0ubuntu0.18.04.2"
},
{
"binary_name": "clamav-milter",
"binary_version": "0.103.2+dfsg-0ubuntu0.18.04.2"
},
{
"binary_name": "clamav-testfiles",
"binary_version": "0.103.2+dfsg-0ubuntu0.18.04.2"
},
{
"binary_name": "clamdscan",
"binary_version": "0.103.2+dfsg-0ubuntu0.18.04.2"
},
{
"binary_name": "libclamav9",
"binary_version": "0.103.2+dfsg-0ubuntu0.18.04.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "clamav",
"purl": "pkg:deb/ubuntu/clamav@0.103.2+dfsg-0ubuntu0.18.04.2?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.103.2+dfsg-0ubuntu0.18.04.2"
}
],
"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",
"0.100.1+dfsg-1ubuntu0.18.04.1",
"0.100.1+dfsg-1ubuntu0.18.04.2",
"0.100.1+dfsg-1ubuntu0.18.04.3",
"0.100.2+dfsg-1ubuntu0.18.04.1",
"0.100.3+dfsg-0ubuntu0.18.04.1",
"0.101.4+dfsg-0ubuntu0.18.04.1",
"0.102.1+dfsg-0ubuntu0.18.04.2",
"0.102.2+dfsg-0ubuntu0.18.04.1",
"0.102.3+dfsg-0ubuntu0.18.04.1",
"0.102.4+dfsg-0ubuntu0.18.04.1",
"0.103.2+dfsg-0ubuntu0.18.04.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "clamav",
"binary_version": "0.103.2+dfsg-0ubuntu0.20.04.2"
},
{
"binary_name": "clamav-base",
"binary_version": "0.103.2+dfsg-0ubuntu0.20.04.2"
},
{
"binary_name": "clamav-daemon",
"binary_version": "0.103.2+dfsg-0ubuntu0.20.04.2"
},
{
"binary_name": "clamav-docs",
"binary_version": "0.103.2+dfsg-0ubuntu0.20.04.2"
},
{
"binary_name": "clamav-freshclam",
"binary_version": "0.103.2+dfsg-0ubuntu0.20.04.2"
},
{
"binary_name": "clamav-milter",
"binary_version": "0.103.2+dfsg-0ubuntu0.20.04.2"
},
{
"binary_name": "clamav-testfiles",
"binary_version": "0.103.2+dfsg-0ubuntu0.20.04.2"
},
{
"binary_name": "clamdscan",
"binary_version": "0.103.2+dfsg-0ubuntu0.20.04.2"
},
{
"binary_name": "libclamav9",
"binary_version": "0.103.2+dfsg-0ubuntu0.20.04.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "clamav",
"purl": "pkg:deb/ubuntu/clamav@0.103.2+dfsg-0ubuntu0.20.04.2?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.103.2+dfsg-0ubuntu0.20.04.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.101.4+dfsg-1ubuntu1",
"0.102.1+dfsg-1ubuntu1",
"0.102.1+dfsg-2ubuntu1",
"0.102.1+dfsg-2ubuntu2",
"0.102.2+dfsg-1ubuntu1",
"0.102.2+dfsg-2ubuntu1",
"0.102.3+dfsg-0ubuntu0.20.04.1",
"0.102.4+dfsg-0ubuntu0.20.04.1",
"0.103.2+dfsg-0ubuntu0.20.04.1"
]
}
],
"aliases": [],
"details": "USN-4918-1 fixed vulnerabilities in ClamAV. The updated package could\nfail to properly scan in some situations. This update fixes\nthe problem.\n\nOriginal advisory details:\n\n It was discovered that ClamAV incorrectly handled parsing Excel documents.\n A remote attacker could possibly use this issue to cause ClamAV to hang,\n resulting in a denial of service. (CVE-2021-1252)\n\n It was discovered that ClamAV incorrectly handled parsing PDF documents. A\n remote attacker could possibly use this issue to cause ClamAV to crash,\n resulting in a denial of service. (CVE-2021-1404)\n\n It was discovered that ClamAV incorrectly handled parsing email. A remote\n attacker could possibly use this issue to cause ClamAV to crash, resulting\n in a denial of service. (CVE-2021-1405)\n",
"id": "USN-4918-3",
"modified": "2026-06-29T10:52:49Z",
"published": "2021-05-03T22:20:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4918-3"
},
{
"type": "REPORT",
"url": "https://launchpad.net/bugs/1926300"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "clamav regression",
"upstream": []
}
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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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