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AUSCERT External Security Bulletin Redistribution
ESB-2015.1912
Security Bulletin: Vulnerabilities in Kerberos (krb5) affect IBM Security
Network Protection (CVE-2014-5352, CVE-2014-5353,
CVE-2014-5355, CVE-2014-9421, and CVE-2014-9422)
22 July 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Security Network Protection
Publisher: IBM
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Remote/Unauthenticated
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2014-9422 CVE-2014-9421 CVE-2014-5355
CVE-2014-5353 CVE-2014-5352
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21961670
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Security Bulletin: Vulnerabilities in Kerberos (krb5) affect IBM Security
Network Protection (CVE-2014-5352, CVE-2014-5353, CVE-2014-5355,
CVE-2014-9421, and CVE-2014-9422)
Security Bulletin
Document information
More support for:
IBM Security Network Protection
Fix Packs
Software version:
5.2.0, 5.3
Operating system(s):
Firmware
Reference #:
1961670
Modified date:
2015-07-21
Summary
IBM Security Network Protection uses Kerberos (krb5) to provide network
authentication. The Kerberos (krb5) version that is shipped with IBM Security
Network Protection contains multiple security vulnerabilities.
Vulnerability Details
CVE-ID: CVE-2014-5352
Description: MIT krb5 could allow a remote authenticated attacker to execute
arbitrary code on the system, caused by a double-free error in
gss_process_context_token(). An attacker could exploit this vulnerability to
execute arbitrary code on the system.
CVSS Base Score: 9.0
CVSS Temporal Score:
https://exchange.xforce.ibmcloud.com/#/vulnerabilities/100842 for more
information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:C/I:C/A:C)
CVE-ID: CVE-2014-5353
Description: MIT krb5 is vulnerable to a denial of service, caused by a NULL
pointer dereference when kadmind is configured to use LDAP for the KDC
database. A remote authenticated attacker could exploit this vulnerability to
cause kadmind to crash.
CVSS Base Score: 3.5
CVSS Temporal Score:
https://exchange.xforce.ibmcloud.com/#/vulnerabilities/99346 for more
information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:S/C:N/I:N/A:P)
CVE-ID: CVE-2014-5355
Description: MIT Kerberos is vulnerable to a denial of service, caused by a
NULL pointer dereference in the krb5_recvauth function. By sending a
non-null-terminated version string, a remote attacker could exploit this
vulnerability to cause the service to crash.
CVSS Base Score: 5.0
CVSS Temporal Score:
https://exchange.xforce.ibmcloud.com/#/vulnerabilities/100972 for more
information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P
CVE-ID: CVE-2014-9421
Description: MIT krb5 could allow a remote authenticated attacker to execute
arbitrary code on the system, caused by a double-free error in the kadmind
daemon. An attacker could exploit this vulnerability to execute arbitrary code
on the system.
CVSS Base Score: 9.0
CVSS Temporal Score:
https://exchange.xforce.ibmcloud.com/vulnerabilities/100841 for more
information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:C/I:C/A:C)
CVE-ID: CVE-2014-9422
Description: MIT krb5 could allow a remote authenticated attacker to bypass
security restrictions, caused by the acceptance of authentications to
two-component server principals. An attacker could exploit this vulnerability
to impersonate arbitrary users.
CVSS Base Score: 6.1
CVSS Temporal Score:
https://exchange.xforce.ibmcloud.com/vulnerabilities/100840 for more
information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:H/Au:S/C:P/I:P/A:C)
Affected Products and Versions
IBM Security Network Protection 5.2
IBM Security Network Protection 5.3
Remediation/Fixes
Product VRMF Remediation/First Fix
IBM Security Network Protection Firmware version 5.2 Download 5.2.0.0-ISS-XGS-All-Models-Hotfix-FP0010 from IBM Fix Central and upload and
install via the Available Updates page of the local management interface.
IBM Security Network Protection Firmware version 5.3 Install Fixpack 5.3.1.2 from the Available Updates page of the local management interface, or by
performing a One Time Scheduled Installation from SiteProtector.
Workarounds and Mitigations
None
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References
Complete CVSS Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
8 July 2015: 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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