Packages
- docker.io - Linux container runtime
Details
Lei Wang and Ruizhi Xiao discovered that the Moby Docker engine in
Docker incorrectly allowed the docker cp command to make permissions
changes in the host filesystem in some situations. A local attacker
could possibly use to this to expose sensitive information or gain
administrative privileges.
Lei Wang and Ruizhi Xiao discovered that the Moby Docker engine in
Docker incorrectly allowed the docker cp command to make permissions
changes in the host filesystem in some situations. A local attacker
could possibly use to this to expose sensitive information or gain
administrative privileges.
Update instructions
In general, a standard system update will 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 | docker.io – 20.10.7-0ubuntu1~21.04.2 | ||
| 20.04 focal | docker.io – 20.10.7-0ubuntu1~20.04.2 | ||
| 18.04 bionic | docker.io – 20.10.7-0ubuntu1~18.04.2 | ||
| 16.04 xenial | docker.io – 18.09.7-0ubuntu1~16.04.9+esm1 | ||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.