Privilege escalation in Red Hat OpenShift Container Platform



Published: 2019-11-21
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-16884
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		Red Hat OpenShift Container Platform
Client/Desktop applications / Software for system administration

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU22482

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-16884

CWE-ID:

Exploit availability:

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat OpenShift Container Platform: 4.1.0 - 4.1.23

Fixed software versions

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2019:3940


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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