Multiple vulnerabilities in Red Hat OpenShift Container Platform

Published: 2019-11-20

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-14287 CVE-2018-12207
CWE-ID	CWE-264 CWE-119
Exploitation vector	Local network
Public exploit	Public exploit code for vulnerability #1 is available.
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 information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU21782

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-14287

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

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

The vulnerability exists in the implementation of the "sudo" application when processing commands that are configured to run with ALL keyword. A local user with privileges to use sudo for specific applications on the system can escalate privileges and run the application as root (even if precisely restricted), if user id "-1" or "4294967295" is used.

Example:

The following entry instructs sudo to allow user bob to run "/usr/bin/id" command as any user on the system but root:

myhost bob = (ALL, !root) /usr/bin/id

The following command will allow bob execute the "/usr/bin/id" command as root:

sudo -u#-1 id -u

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat OpenShift Container Platform: 4.2.0 - 4.2.4

CPE2.3

cpe:2.3:a:red_hat:red_hat_openshift_container_platform:4.2.4:*:*:*:*:*:*:*

External links

http://access.redhat.com/errata/RHSA-2019:3916

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Buffer overflow

EUVDB-ID: #VU22712

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-12207

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to perform denial of service (DoS) attack.

The vulnerability exists due to a boundary error in the mechanism responsible for error handling on some Intel platforms. A local user of a guest operating system can use a specially crafted application to trigger memory corruption and cause the host system to stop responding.

Successful exploitation of this vulnerability may result in a denial of service (DoS) attack.

Below is the list of processor families that are affected by this vulnerability:

Client:

Intel Core i3 Processors
Intel Core i5 Processors
Intel Core i7 Processors
Intel Core m Processor Family
2nd generation Intel Core Processors
3rd generation Intel Core Processors
4th generation Intel Core Processors
5th generation Intel Core Processors
6th generation Intel Core Processors
7th generation Intel Core Processors
8th generation Intel Core Processors
Intel Core X-series Processor Family
Intel Pentium Gold Processor Series
Intel Celeron Processor G Series

Server:

2nd Generation Intel Xeon Scalable Processors
Intel Xeon Scalable Processors
Intel Xeon Processor E7 v4 Family
Intel Xeon Processor E7 v3 Family
Intel Xeon Processor E7 v2 Family
Intel Xeon Processor E7 Family
Intel Xeon Processor E5 v4 Family
Intel Xeon Processor E5 v3 Family
Intel Xeon Processor E5 v2 Family
Intel Xeon Processor E5 Family
Intel Xeon Processor E3 v6 Family
Intel Xeon Processor E3 v5 Family
Intel Xeon Processor E3 v4 Family
Intel Xeon Processor E3 v3 Family
Intel Xeon Processor E3 v2 Family
Intel Xeon Processor E3 Family
Intel Xeon E Processor
Intel Xeon D Processor
Intel Xeon W Processor
Legacy Intel Xeon Processor