Security Bulletin: A vulnerability in git affects PowerKVM (CVE-2015-7545)

Summary

PowerKVM is affected by a vulnerability in git. This vulnerability is now fixed.

Vulnerability Details

CVEID: CVE-2015-7545**
DESCRIPTION:** GIT could allow a remote attacker to execute arbitrary commands on the system, caused by the failure to properly handle recursive clones of git repositories by git-remote-ext helper. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to inject and execute arbitrary commands on the system.
CVSS Base Score: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109417 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L)

Affected Products and Versions

PowerKVM 2.1 and PowerKVM 3.1

Remediation/Fixes

Customers can update PowerKVM systems by using “yum update”.

Fix images are made available via Fix Central. For version 3.1, see https://ibm.biz/BdHggw for 3.1.0 service pack 1 (SP1) or later.

For version 2.1, the fix is made available via Fix Central (https://ibm.biz/BdEnT8) in 2.1.1 Build 65.7 and all later 2.1.1 SP3 service builds and 2.1.1 service packs. Customers running v2.1 are, in any case, encouraged to upgrade to v3.1.

For v2.1 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.

Workarounds and Mitigations

v2.1 customers can work around the problem by upgrading to the fixed release of v3.1