usn-5026-1
Vulnerability from osv_ubuntu
Published
2021-07-29 16:28
Modified
2026-04-22 07:37
Summary
qpdf vulnerabilities
Details
It was discovered that QPDF incorrectly handled certain malformed PDF files. A remote attacker could use this issue to cause QPDF to consume resources, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-18020)
It was discovered that QPDF incorrectly handled certain malformed PDF files. A remote attacker could use this issue to cause QPDF to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-36978)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2018-18020",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-36978",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libqpdf21",
"binary_version": "8.0.2-3ubuntu0.1"
},
{
"binary_name": "qpdf",
"binary_version": "8.0.2-3ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "qpdf",
"purl": "pkg:deb/ubuntu/qpdf@8.0.2-3ubuntu0.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.0.2-3ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.0.0-1",
"7.1.0-1",
"7.1.1-1",
"8.0.0-1",
"8.0.1-1",
"8.0.2-1",
"8.0.2-3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-36978",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libqpdf26",
"binary_version": "9.1.1-1ubuntu0.1"
},
{
"binary_name": "qpdf",
"binary_version": "9.1.1-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "qpdf",
"purl": "pkg:deb/ubuntu/qpdf@9.1.1-1ubuntu0.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.1.1-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.4.2-1",
"9.0.2-1",
"9.1.0-1",
"9.1.1-1",
"9.1.1-1build1"
]
}
],
"aliases": [],
"details": "It was discovered that QPDF incorrectly handled certain malformed PDF\nfiles. A remote attacker could use this issue to cause QPDF to consume\nresources, resulting in a denial of service. This issue only affected\nUbuntu 18.04 LTS. (CVE-2018-18020)\n\nIt was discovered that QPDF incorrectly handled certain malformed PDF\nfiles. A remote attacker could use this issue to cause QPDF to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2021-36978)\n",
"id": "USN-5026-1",
"modified": "2026-04-22T07:37:00Z",
"published": "2021-07-29T16:28:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5026-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-18020"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-36978"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "qpdf vulnerabilities",
"upstream": [
"UBUNTU-CVE-2018-18020",
"UBUNTU-CVE-2021-36978"
]
}
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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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