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AUSCERT External Security Bulletin Redistribution
ESB-2014.1782
Vulnerabilities in Bash affect Power Hardware Management Console
(CVE-2014-6271, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187,
CVE-2014-6277, CVE-2014-6278)
7 October 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Power Hardware Management Console
Publisher: IBM
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-7187 CVE-2014-7186 CVE-2014-7169
CVE-2014-6278 CVE-2014-6277 CVE-2014-6271
Reference: ASB-2014.0115
ASB-2014.0114
ASB-2014.0111
ESB-2014.1778
ESB-2014.1776
ESB-2014.1774
ESB-2014.1764
ESB-2014.1755
ESB-2014.1749
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=nas8N1020272
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Vulnerabilities in Bash affect Power Hardware Management Console
(CVE-2014-6271, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187, CVE-2014-6277,
CVE-2014-6278)
Document information
More support for:
Server Firmware, HMC and SDMC
HMC
Software version:
Version Independent
Operating system(s):
Platform Independent
Reference #:
N1020272
Modified date:
2014-10-02
Security Bulletin
Summary
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. Bash is used by Power
Hardware Management Console.
Vulnerability Details
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 http://xforce.iss.net/xforcesur/xfdb/96153 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 http://xforce.iss.net/xforce/xfdb/96209 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 http://xforce.iss.net/xforce/xfdb/96237 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 http://xforce.iss.net/xforce/xfdb/96238 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-2014-6277
DESCRIPTION: GNU Bash could allow a remote attacker to execute arbitrary code
on the system, caused by an incomplete fix related to the failure to properly
parse 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 execute arbitrary code on the system or cause a denial
of service.
CVSS Base Score: 10.0
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/96686 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-2014-6278
DESCRIPTION: GNU Bash could allow a remote attacker to execute arbitrary code
on the system, caused by an incomplete fix related to the parsing of user
scripts. An attacker could exploit this vulnerability to execute arbitrary
code on the system or cause a denial of service.
CVSS Base Score: 10.0
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/96687 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Affected Products and Versions
Power HMC Version 7 R7.3.0
Power HMC Version 7 R7.6.0
Power HMC Version 7 R7.7.0
Power HMC Version 7 R7.8.0
Power HMC Version 7 R7.9.0
Power HMC Version 8 R8.1.0
Remediation/Fixes
The Following fixes are available on IBM Fix Central at
http://www-933.ibm.com/support/fixcentral/
Product VRMF APAR Remediation/First Fix (PTF)
Power HMC Version 7 R7.3.0 SP6 MB03857 MH01475
Power HMC Version 7 R7.6.0 SP3 MB03852 MH01470
Power HMC Version 7 R7.7.0 SP1 MB03861 MH01479
Power HMC Version 7 R7.7.0 SP2 MB03862 MH01480
Power HMC Version 7 R7.7.0 SP4 MB03853 MH01471
Power HMC Version 7 R7.8.0 SP1 MB03854 MH01472
Power HMC Version 7 R7.9.0 SP1 MB03855 MH01473
Power HMC Version 8 R8.1.0 SP1 MB03856 MH01474
Power HMC Older V7 releases not N/A Please update to supported
listed above releases listed above.
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.
Workarounds and Mitigations
None Known
References
Complete CVSS Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
None
Change History
05 October 2014: Original Version Published
*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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