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Security Bulletin: Vulnerabilities in git affect PowerKVM

Security Bulletin


Summary

PowerKVM is affected by vulnerabilities in git. IBM has now addressed these vulnerabilities.

Vulnerability Details

CVEID: CVE-2017-8386
DESCRIPTION:
Git could allow a remote authenticated attacker to gain elevated privileges on the system. By giving a specially crafted repository name with a dash, an attacker could break out of the restricted ''git-shell'' and gain elevated privileges on the target system.
CVSS Base Score: 8.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/126043 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2014-9938
DESCRIPTION:
Git could allow a remote attacker to execute arbitrary code on the system, caused by improper sanitization of branch names in contrib/completion/git-prompt.sh. By using a specially-crafted branch name, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/127316 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)



CVEID: CVE-2017-1000117
DESCRIPTION:
Git could allow a remote authenticated attacker to execute arbitrary commands on the system, caused by improper handling of the "ssh" URLs. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary commands on the system.
CVSS Base Score: 8.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/130244 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

PowerKVM 2.1 and 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. This issue is addressed starting with v3.1.0.2 update 10.



For version 2.1, see https://ibm.biz/BdEnT8. This issue is addressed starting with PowerKVM 2.1.1.3-65 update 19. 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 for prerequisite fixes and instructions.

Workarounds and Mitigations

none

Get Notified about Future Security Bulletins

References

Off

Change History

10 August 2017 - Initial Version

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

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Document Information

Modified date:
17 June 2018

UID

isg3T1025756