Security Bulletin: Multiple vulnerabilities in Python affect PowerKVM

Summary

PowerKVM is affected by several vulnerabilities in Python. These vulnerabilities are now fixed.

Vulnerability Details

CVEID: CVE-2013-1752**
DESCRIPTION:** Python SSL module is vulnerable to denial of service, caused by an unlimited readline() function call. A remote attacker could exploit this vulnerability to exhaust all available memory resources.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/90056 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2014-7185**
DESCRIPTION:** Python could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow in bufferobject.c. An attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/96193 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVEID: CVE-2013-1753**
DESCRIPTION:** Python is vulnerable to a denial of service, caused by the failure to restrict the size of a gzip compressed HTTP responses by the xmlrpc library. By connecting to a malicious server, an attacker could exploit this vulnerability to consume an overly large amount of memory resources.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111150 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2014-4616**
DESCRIPTION:** Python JSON module could allow a local attacker to obtain sensitive information, caused by the failure to properly handle negative index values and allowing them to be used directly as an index to an array in the C code. An attacker could exploit this vulnerability to read current process memory and obtain sensitive information.
CVSS Base Score: 2.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/93933 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N)

CVEID: CVE-2014-4650**
DESCRIPTION:** Python CGIHTTPServer module could allow a remote attacker to obtain sensitive information, caused by the failure to properly handle URL-encoded path separators in URLs. An attacker could exploit this vulnerability to obtain the source code of CGI scripts.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/93932 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)

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

None