Summary
It 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)
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | containerd | 1.2.6-0ubuntu1~16.04.6+esm2 |
Vulnerabilities 4
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High 7.5
Insecure handling of image volumes in containerd CRI plugin
containerd is a container runtime available as a daemon for Linux and Windows. A bug was found in containerd prior to versions 1.6.1, 1.5.10, and 1.14.12 where containers launched through containerd’s CRI implementation on Linux with a specially-crafted image…
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Medium 5.9
Insufficiently restricted permissions on plugin directories
containerd is an open source container runtime with an emphasis on simplicity, robustness and portability. A bug was found in containerd where container root directories and some plugins had insufficiently restricted permissions, allowing otherwise unprivileg…
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Medium 5.5
containerd CRI plugin: Host memory exhaustion through ExecSync
containerd is an open source container runtime. A bug was found in the containerd's CRI implementation where programs inside a container can cause the containerd daemon to consume memory without bound during invocation of the `ExecSync` API. This can cause co…
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Medium 5.0
Archive package allows chmod of file outside of unpack target directory
containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes…