Security Bulletin: Vulnerability in rpcbind affects PowerKVM (CVE-2015-7236)

Summary

A denial of service vulnerability in rpcbind (CVE-2015-7236) affects PowerKVM.

Vulnerability Details

CVEID: CVE-2015-7236**
DESCRIPTION:** rpcbind is vulnerable to a denial of service, caused by a use-after-free in PMAP_CALLIT. By sending specially crafted packets, a remote attacker could exploit this vulnerability to cause the daemon to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/106714 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

PowerKVM 2.1 and PowerKVM 3.1

Remediation/Fixes

Fix is made available via Fix Central (https://ibm.biz/BdEnT8) for v2.1 in 2.1.1 Build 65.5 and all later 2.1.1 SP3 service builds and 2.1.1 fix packs. For version 3.1, see https://ibm.biz/BdHggw for 3.1 service build 2 or later.

For systems currently running fix levels of PowerKVM prior to 2.1.1, please see <http://download4.boulder.ibm.com/sar/CMA/OSA/05e4c/0/README&gt; for prerequisite fixes and instructions. Customers can also update from 2.1.1 (GA and later levels) by using “yum update”.

Workarounds and Mitigations

None