Improper access control in runc - CVE-2019-19921
Published: March 10, 2020 / Updated: March 17, 2020
Vulnerability identifier: #VU25847
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2019-19921
CWE-ID: CWE-284
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 gain unauthorized access to sensitive information.
The vulnerability exists due to improper access restrictions, related to libcontainer/rootfs_linux.go in runc. A local user with ability to spawn two containers with custom volume-mount configurations, and run custom images can escalate privileges on the system.
How to mitigate CVE-2019-19921
Install update from vendor's website.