#VU22482 Permissions, Privileges, and Access Controls in runc - CVE-2019-16884

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Main Vulnerability Database Vulnerabilities #VU22482

#VU22482 Permissions, Privileges, and Access Controls in runc - CVE-2019-16884

Published: November 1, 2019 / Updated: November 21, 2019


Vulnerability identifier: #VU22482
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-16884
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
runc
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect checking of the mount targets in libcontainer/rootfs_linux.go in runc. A local user can bypass AppArmor restrictions and perform unauthorized actions on the system, as demonstrated by overwriting the /proc directory with a malicious Doker image.


Remediation

Install updates from vendor's website.

External links