usn-5379-1
Vulnerability from osv_ubuntu
Published
2022-04-18 11:37
Modified
2026-06-29 10:52
Summary
klibc vulnerabilities
Details
It was discovered that klibc did not properly perform some mathematical operations, leading to an integer overflow. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31870)
It was discovered that klibc did not properly handled some memory allocations on 64 bit systems. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31871)
It was discovered that klibc did not properly handled some file sizes values on 32 bit systems. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31872)
It was discovered that klibc did not properly handled some memory allocations. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31873)
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-31870",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31871",
"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": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31872",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31873",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "klibc-utils",
"binary_version": "2.0.3-0ubuntu1.14.04.3+esm2"
},
{
"binary_name": "libklibc",
"binary_version": "2.0.3-0ubuntu1.14.04.3+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "klibc",
"purl": "pkg:deb/ubuntu/klibc@2.0.3-0ubuntu1.14.04.3+esm2?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.3-0ubuntu1.14.04.3+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.1-3.1ubuntu2",
"2.0.2-1ubuntu1",
"2.0.2-1ubuntu2",
"2.0.3-0ubuntu1",
"2.0.3-0ubuntu1.14.04.1",
"2.0.3-0ubuntu1.14.04.2",
"2.0.3-0ubuntu1.14.04.3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-31870",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31871",
"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": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31872",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31873",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "klibc-utils",
"binary_version": "2.0.4-8ubuntu1.16.04.4+esm1"
},
{
"binary_name": "libklibc",
"binary_version": "2.0.4-8ubuntu1.16.04.4+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "klibc",
"purl": "pkg:deb/ubuntu/klibc@2.0.4-8ubuntu1.16.04.4+esm1?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.4-8ubuntu1.16.04.4+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.3-0ubuntu1",
"2.0.4-4",
"2.0.4-6",
"2.0.4-7",
"2.0.4-8",
"2.0.4-8ubuntu1",
"2.0.4-8ubuntu1.16.04.1",
"2.0.4-8ubuntu1.16.04.2",
"2.0.4-8ubuntu1.16.04.3",
"2.0.4-8ubuntu1.16.04.4"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-31870",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31871",
"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": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31872",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31873",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "klibc-utils",
"binary_version": "2.0.4-9ubuntu2.1"
},
{
"binary_name": "libklibc",
"binary_version": "2.0.4-9ubuntu2.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "klibc",
"purl": "pkg:deb/ubuntu/klibc@2.0.4-9ubuntu2.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.4-9ubuntu2.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.4-9ubuntu1",
"2.0.4-9ubuntu2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-31870",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31871",
"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": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31872",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-31873",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "klibc-utils",
"binary_version": "2.0.7-1ubuntu5.1"
},
{
"binary_name": "libklibc",
"binary_version": "2.0.7-1ubuntu5.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "klibc",
"purl": "pkg:deb/ubuntu/klibc@2.0.7-1ubuntu5.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.7-1ubuntu5.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.6-1ubuntu1",
"2.0.6-1ubuntu2",
"2.0.7-1ubuntu1",
"2.0.7-1ubuntu3",
"2.0.7-1ubuntu4",
"2.0.7-1ubuntu5"
]
}
],
"aliases": [],
"details": "It was discovered that klibc did not properly perform\nsome mathematical operations, leading to an integer overflow.\nAn attacker could possibly use this issue to cause a crash,\nresulting in a denial of service, or possibly execute\narbitrary code. (CVE-2021-31870)\n\nIt was discovered that klibc did not properly handled some\nmemory allocations on 64 bit systems. An attacker could\npossibly use this issue to cause a crash, resulting in a\ndenial of service, or possibly execute arbitrary code.\n(CVE-2021-31871)\n\nIt was discovered that klibc did not properly handled some file\nsizes values on 32 bit systems. An attacker could possibly use\nthis issue to cause a crash, resulting in a denial of service,\nor possibly execute arbitrary code. (CVE-2021-31872)\n\nIt was discovered that klibc did not properly handled some\nmemory allocations. An attacker could possibly use this issue\nto cause a crash, resulting in a denial of service, or possibly\nexecute arbitrary code. (CVE-2021-31873)\n",
"id": "USN-5379-1",
"modified": "2026-06-29T10:52:54Z",
"published": "2022-04-18T11:37:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5379-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-31870"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-31871"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-31872"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-31873"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "klibc vulnerabilities",
"upstream": [
"UBUNTU-CVE-2021-31870",
"UBUNTU-CVE-2021-31871",
"UBUNTU-CVE-2021-31872",
"UBUNTU-CVE-2021-31873"
]
}
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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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