=========================================================================Ubuntu Security Notice USN-6088-1
May 18, 2023
runc vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in runC.
Software Description:
- runc: Open Container Project
Details:
It was discovered that runC incorrectly made /sys/fs/cgroup
writable when in rootless mode. An attacker could possibly
use this issue to escalate privileges. (CVE-2023-25809)
It was discovered that runC incorrectly performed access control when
mounting /proc to non-directories. An attacker could possibly use
this issue to escalate privileges. (CVE-2023-27561)
It was discovered that runC incorrectly handled /proc and
/sys mounts inside a container. An attacker could possibly
use this issue to bypass AppArmor, and potentially SELinux.
(CVE-2023-28642)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.04:
runc 1.1.4-0ubuntu3.1
Ubuntu 22.10:
runc 1.1.4-0ubuntu1~22.10.3
Ubuntu 22.04 LTS:
runc 1.1.4-0ubuntu1~22.04.3
Ubuntu 20.04 LTS:
runc 1.1.4-0ubuntu1~20.04.3
Ubuntu 18.04 LTS:
runc 1.1.4-0ubuntu1~18.04.2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6088-1
CVE-2023-25809, CVE-2023-27561, CVE-2023-28642
Package Information:
https://launchpad.net/ubuntu/+source/runc/1.1.4-0ubuntu3.1
https://launchpad.net/ubuntu/+source/runc/1.1.4-0ubuntu1~22.10.3
https://launchpad.net/ubuntu/+source/runc/1.1.4-0ubuntu1~22.04.3
https://launchpad.net/ubuntu/+source/runc/1.1.4-0ubuntu1~20.04.3
https://launchpad.net/ubuntu/+source/runc/1.1.4-0ubuntu1~18.04.2
