usn-5273-1
Vulnerability from osv_ubuntu
Published
2022-07-21 06:56
Modified
2026-06-25 10:46
Summary
rpm vulnerabilities
Details
Demi M. Obenour discovered that RPM Package Manager incorrectly handled certain files. An attacker could possibly use this issue to corrupt the database and cause a denial of service. (CVE-2021-3421, CVE-2021-20271)
Demi M. Obenour discovered that RPM Package Manager incorrectly handled memory when processing certain data from the database. An attacker could possibly use this issue to cause a denial of service. This issue only affects Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2021-20266)
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-3421",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-20271",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "debugedit",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "librpm3",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "librpmbuild3",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "librpmio3",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "librpmsign3",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "python-rpm",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "python3-rpm",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "rpm",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "rpm-common",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.12.0.1+dfsg1-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.12.0.1+dfsg1-3build2",
"4.12.0.1+dfsg1-3build3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-3421",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-20266",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-20271",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "debugedit",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "librpm8",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "librpmbuild8",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "librpmio8",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "librpmsign8",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "python-rpm",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "python3-rpm",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "rpm",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "rpm-common",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.14.1+dfsg1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.14.1+dfsg1-2ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.12.0.2+dfsg1-2build2",
"4.14.0+dfsg1-2",
"4.14.1+dfsg1-2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-3421",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-20266",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-20271",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "debugedit",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "librpm8",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "librpmbuild8",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "librpmio8",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "librpmsign8",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "python-rpm",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "python3-rpm",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "rpm",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "rpm-common",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.14.2.1+dfsg1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.14.2.1+dfsg1-1",
"4.14.2.1+dfsg1-1build1",
"4.14.2.1+dfsg1-1build2"
]
}
],
"aliases": [],
"details": "Demi M. Obenour discovered that RPM Package Manager incorrectly handled\ncertain files. An attacker could possibly use this issue to corrupt the\ndatabase and cause a denial of service. (CVE-2021-3421, CVE-2021-20271)\n\nDemi M. Obenour discovered that RPM Package Manager incorrectly handled\nmemory when processing certain data from the database. An attacker could\npossibly use this issue to cause a denial of service. This issue only\naffects Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2021-20266)\n",
"id": "USN-5273-1",
"modified": "2026-06-25T10:46:04Z",
"published": "2022-07-21T06:56:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5273-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3421"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-20266"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-20271"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "rpm vulnerabilities",
"upstream": [
"UBUNTU-CVE-2021-3421",
"UBUNTU-CVE-2021-20266",
"UBUNTU-CVE-2021-20271"
]
}
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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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