Security Bulletin
Summary
PowerKVM is affected by vulnerabilities in ghostscript. IBM has now addressed these vulnerabilities.
Vulnerability Details
CVEID: CVE-2013-5653
DESCRIPTION: Ghostscript could allow a remote attacker to obtain sensitive information, caused by the failure to honor the -dSAFER option by the getenv and filenameforall function. A remote attacker could exploit this vulnerability using a specially-crafted document to read environment variable and list directory from the system.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/121090 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
CVEID: CVE-2016-7977
DESCRIPTION: Ghostscript could allow a remote attacker to obtain sensitive information, caused by the failure to check PermitFileReading array when using dSAFER sandbox. An attacker could exploit this vulnerability using .libfile to access arbitrary files on the file system.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117922 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2016-7978
DESCRIPTION: Ghostscript could allow a remote attacker to execute arbitrary commands on the system, caused by a reference leak in .setdevice when using dSAFER sandbox. An attacker could exploit this vulnerability to trigger a use-after-free and execute arbitrary code on the system.
CVSS Base Score: 8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117923 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L)
CVEID: CVE-2016-7979
DESCRIPTION: Ghostscript could allow a remote attacker to execute arbitrary commands on the system, caused by a type confusion in .initialize_dsc_parser when using dSAFER sandbox. An attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117924 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L)
CVEID: CVE-2016-8602
DESCRIPTION: Ghostscript could allow a remote attacker to execute arbitrary commands on the system, caused by a type confusion error in .sethalftone5 when using dSAFER sandbox. An attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117925 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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. This issue is addressed as of 3.1.0.2 update 5 or later.
For version 2.1, see https://ibm.biz/BdEnT8. This issue is addressed as of PowerKVM 2.1.1.3-65 update 15 or later. 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
Change History
24 Jan 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
17 June 2018
UID
isg3T1024869