Security Bulletin
Summary
PowerKVM is affected by numerous vulnerabilities in PHP. IBM has now addressed these vulnerabilities.
Vulnerability Details
CVEID: CVE-2016-5399
DESCRIPTION: PHP could allow a remote attacker to execute arbitrary code on the system, caused by an out-of-bounds write in the bzread() function. By sending a specially-crafted request, an attacker could exploit this vulnerability to upload a malformed PHP script to execute arbitrary code on the system.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/115332 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2016-5766
DESCRIPTION: PHP is vulnerable to a heap-based buffer overflow, caused by an integer overflow in the _gd2GetHeader() function. By sending an overly long argument, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/114386 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2016-5767
DESCRIPTION: PHP is vulnerable to a heap-based buffer overflow, caused by an integer interflow in the gdImagePaletteToTrueColor() function. By sending an overly long argument, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/114387 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2016-5768
DESCRIPTION: PHP could allow a remote attacker to execute arbitrary code on the system, caused by a double-free error in the _php_mb_regex_ereg_replace_exec. An attacker could exploit this vulnerability to execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/114388 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Affected Products and Versions
PowerKVM 3.1 only
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 3 or later.
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Change History
11 November 2016 - 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
isg3T1024545