Security Bulletin: Vulnerabilities in Bash affect SmartCloud Provisioning for IBM Provided Software Virtual Appliance

Summary

Vulnerabilities in Bash affect SmartCloud Provisioning for IBM Provided Software Virtual Appliance (CVE-2014-6271, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187).

Vulnerability Details

Six Bash vulnerabilities were disclosed in September 2014. This bulletin addresses the vulnerabilities that have been referred to as “Bash Bug” or “Shellshock” and two memory corruption vulnerabilities.

CVE-ID: CVE-2014-6271

DESCRIPTION: GNU Bash could allow a remote attacker to execute arbitrary commands on the system, caused by an error when evaluating specially-crafted environment variables passed to it by the bash functionality. An attacker could exploit this vulnerability to write to files and execute arbitrary commands on the system.

CVSS Base Score: 10.0
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/96153&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVE-ID: CVE-2014-7169

DESCRIPTION: GNU Bash could allow a remote attacker to execute arbitrary commands on the system, caused by an incomplete fix related to malformed function definitions in the values of environment variables. An attacker could exploit this vulnerability using attack vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server to write to files and execute arbitrary commands on the system.

CVSS Base Score: 10.0
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/96209&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVE-ID: CVE-2014-7186

DESCRIPTION: GNU Bash could allow a local attacker to execute arbitrary code on the system, caused by an out-of-bounds memory access while handling redir_stack. An attacker could exploit this vulnerability to execute arbitrary code on the system or cause a denial of service.

CVSS Base Score: 4.6
CVSS Temporal Score: See _<https://exchange.xforce.ibmcloud.com/vulnerabilities/96237&gt;_ for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:P)

CVE-ID: CVE-2014-7187

DESCRIPTION: GNU Bash could allow a local attacker to execute arbitrary code on the system, caused by an off-by-one-error when handling deeply nested flow control constructs. An attacker could exploit this vulnerability to execute arbitrary code on the system or cause a denial of service.

CVSS Base Score: 4.6
CVSS Temporal Score: See _<https://exchange.xforce.ibmcloud.com/vulnerabilities/96238&gt;_ for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:P)

Affected Products and Versions

IBM SmartCloud Provisioning 2.1 FixPack 1 for Software Virtual Appliance to IBM SmartCloud Provisioning 2.1 FixPack 5 for Software Virtual Appliance
IBM SmartCloud Provisioning 2.1 FixPack 4 Interim Fix 1 for Software Virtual Appliance

Remediation/Fixes

The recommended solution is to download the IBM SmartCloud Provisioning 2.1 FixPack 5 for Software Virtual Appliance for Software Virtual Appliance Interim Fix 1 from Fix Central and apply it as soon as practical.

IBM recommends that you review your entire environment to identify vulnerable releases of Bash including your Operating Systems and take appropriate mitigation and remediation actions. Please contact your Operating System provider for more information.

See the latest IBM Cloud Orchestrator fix release on IBM Fix Central.

Workarounds and Mitigations

None.