USN-6088-1: runC vulnerabilities
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)
Affected Software
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
What is the vulnerability ID for these runC vulnerabilities?
The vulnerability ID for these runC vulnerabilities is CVE-2023-25809.
What is the severity of the runC vulnerability CVE-2023-25809?
The severity of the runC vulnerability CVE-2023-25809 is not specified.
How can an attacker exploit the runC vulnerability CVE-2023-25809?
An attacker could exploit the runC vulnerability CVE-2023-25809 by exploiting incorrect privilege escalation due to the /sys/fs/cgroup directory being made writable in rootless mode.
Is there a fix available for the runC vulnerability CVE-2023-25809?
Yes, a fix for the runC vulnerability CVE-2023-25809 is available.
Where can I find more information about the runC vulnerabilities?
You can find more information about the runC vulnerabilities at the following references: [CVE-2023-28642](https://ubuntu.com/security/CVE-2023-28642), [CVE-2023-27561](https://ubuntu.com/security/CVE-2023-27561), [CVE-2023-25809](https://ubuntu.com/security/CVE-2023-25809).