USN-5521-1 (UBUNTU-CVE-2021-32760)
Vulnerability from osv_ubuntu – Published: 2022-07-15 13:48 – Updated: 2026-06-25 10:46 – Source websiteIt was discovered that containerd insufficiently restricted permissions on container root and plugin directories. If a user or automated system were tricked into launching a specially crafted container image, a remote attacker could traverse directory contents and modify files and execute programs on the host file system, possibly leading to privilege escalation. (CVE-2021-41103)
It was discovered that containerd incorrectly handled file permission changes. If a user or automated system were tricked into launching a specially crafted container image, a remote attacker could change permissions on files on the host file system and possibly escalate privileges. (CVE-2021-32760)
It was discovered that containerd allows attackers to gain access to read- only copies of arbitrary files and directories on the host via a specially- crafted image configuration. An attacker could possibly use this issue to obtain sensitive information. (CVE-2022-23648)
It was discovered that containerd incorrectly handled certain memory operations. A remote attacker could use this to cause a denial of service. (CVE-2022-31030)
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-32760",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-41103",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2022-31030",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "containerd",
"binary_version": "1.2.6-0ubuntu1~16.04.6+esm2"
},
{
"binary_name": "golang-github-docker-containerd-dev",
"binary_version": "1.2.6-0ubuntu1~16.04.6+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "containerd",
"purl": "pkg:deb/ubuntu/containerd@1.2.6-0ubuntu1~16.04.6+esm2?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.6-0ubuntu1~16.04.6+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.2.1-0ubuntu4~16.04",
"0.2.3-0ubuntu1~16.04",
"0.2.5-0ubuntu1~16.04.1",
"1.2.6-0ubuntu1~16.04.2",
"1.2.6-0ubuntu1~16.04.3",
"1.2.6-0ubuntu1~16.04.4",
"1.2.6-0ubuntu1~16.04.5",
"1.2.6-0ubuntu1~16.04.6",
"1.2.6-0ubuntu1~16.04.6+esm1"
]
}
],
"aliases": [],
"details": "It was discovered that containerd insufficiently restricted permissions on\ncontainer root and plugin directories. If a user or automated system were\ntricked into launching a specially crafted container image, a remote\nattacker could traverse directory contents and modify files and execute\nprograms on the host file system, possibly leading to privilege escalation.\n(CVE-2021-41103)\n\nIt was discovered that containerd incorrectly handled file permission\nchanges. If a user or automated system were tricked into launching a\nspecially crafted container image, a remote attacker could change\npermissions on files on the host file system and possibly escalate\nprivileges. (CVE-2021-32760)\n\nIt was discovered that containerd allows attackers to gain access to read-\nonly copies of arbitrary files and directories on the host via a specially-\ncrafted image configuration. An attacker could possibly use this issue to\nobtain sensitive information. (CVE-2022-23648)\n\nIt was discovered that containerd incorrectly handled certain memory\noperations. A remote attacker could use this to cause a denial of service.\n(CVE-2022-31030)\n",
"id": "USN-5521-1",
"modified": "2026-06-25T10:46:06Z",
"published": "2022-07-15T13:48:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5521-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-32760"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-41103"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2022-23648"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2022-31030"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "containerd vulnerabilities",
"upstream": [
"UBUNTU-CVE-2021-32760",
"UBUNTU-CVE-2021-41103",
"UBUNTU-CVE-2022-23648",
"UBUNTU-CVE-2022-31030"
]
}
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