Privilege escalation in IBM ProtecTIER

1) Privilege escalation

EUVDB-ID: #VU1039

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2016-5195

CWE-ID:

Exploit availability:

Description

The vulnerability allows a  local user to obtain elevated privileges on the target system.
The weakness is due to race condition in the kernel memory subsystem in the management of copy-on-write operations on read-only memory mappings that lets attackers to overwrite kernel memory and gain kernel-level privileges.
Successful exploitation of the vulnerability results in gaining of root privileges on the vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ProtecTIER Entry Edition (PID 5639-PTC) - TS7610 / TS7620: All versions

ProtecTIER Gateway for System Z (PID 5639-FPA): All versions

ProtecTIER Appliance Edition (PID 5639-PTB) - TS7650AP1: All versions

ProtecTIER Enterprise Edition (PID 5639-PTA) - TS7650G: All versions

Fixed software versions

CPE2.3

• cpe:2.3:a:ibm_corporation:protectier_entry_edition_\(pid_5639-ptc\)_-_ts7610_\/_ts7620:*:*:*:*:*:*:*:*

External links

http://www.ibm.com/support/pages/node/696401

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?