Packages
- containerd - daemon to control runC
Details
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 filesystem and possibly escalate
privileges.
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 filesystem and possibly escalate
privileges.
Update instructions
After a standard system update you need to restart containerd to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 21.04 hirsute | containerd – 1.5.2-0ubuntu1~21.04.2 | ||
| 20.10 groovy | containerd – 1.5.2-0ubuntu1~20.10.2 | ||
| 20.04 focal | containerd – 1.5.2-0ubuntu1~20.04.2 | ||
| 18.04 bionic | containerd – 1.5.2-0ubuntu1~18.04.2 | ||
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