Improper Preservation of Permissions in runc - CVE-2023-25809
Published: March 30, 2023
Vulnerability identifier: #VU74189
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-25809
CWE-ID: CWE-281
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Open Container Initiative
Affected software:
runc
runc
Detailed vulnerability description
The vulnerability allows a local user to compromise the target system.
The vulnerability exists due to the rootless "/sys/fs/cgroup" is writable when cgroupns is not unshared. A local administrator can gain the write access to user-owned cgroup hierarchy "/sys/fs/cgroup/user.slice/..." on the host.
How to mitigate CVE-2023-25809
Install updates from vendor's website.