IBM Support

Security Bulletin: IBM® DB2® LUW on AIX and Linux Affected by Multiple Vulnerabilities in GPFS.

Security Bulletin


Summary

DB2 LUW is affected by multiple vulnerabilities in IBM® General Parallel File System, Version 3.5 and 4.1.1 that is used by DB2® pureScale™ Feature on AIX and Linux.

Vulnerability Details


CVEID: CVE-2016-0263
DESCRIPTION:
IBM General Parallel File System could allow a local user under special circumstances to escalate their privileges or cause a denial of service.
CVSS Base Score: 7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/110661 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)

CVEID: CVE-2015-5370
DESCRIPTION:
Samba is vulnerable to a denial of service, caused by the improper validation of DCE-RPC packets by the DCE-RPC client and server implementations. An attacker could exploit this vulnerability using man-in-the-middle techniques to downgrade a secure connection to an insecure one and consume an overly large amount of CPU resources.
CVSS Base Score: 5.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111936 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:L/A:L)

CVEID: CVE-2016-2110
DESCRIPTION:
Samba could allow a remote attacker to bypass security restrictions, caused by the failure to protect the feature negotiation of NTLMSSP from a downgrade. A remote attacker could exploit this vulnerability using man-in-the-middle techniques to clear NTLMSSP_NEGOTIATE_SIGN and NTLMSSP_NEGOTIATE_SEAL flags and perform downgrade attacks.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111937 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:L/A:N)

CVEID: CVE-2016-2111
DESCRIPTION:
Samba could allow a remote attacker to conduct spoofing attacks, caused by an error in the NETLOGON service when a Domain Controller is configured. By logging into a domain joined system and observing network traffic, an attacker could exploit this vulnerability using a specially crafted application to connect to another domain joined system and access session-related information of the spoofed computer.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111938 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:L/A:N)

CVEID: CVE-2016-2112
DESCRIPTION:
Samba could allow a remote attacker to bypass security restrictions, caused by the failure to enforce integrity protection by the LDAP client and server. A remote attacker could exploit this vulnerability using man-in-the-middle techniques to downgrade LDAP connections.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111939 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:L/A:N)

CVEID: CVE-2016-2113
DESCRIPTION:
Samba could allow a remote attacker to bypass security restrictions, caused by the failure to validate TLS certificates. A remote attacker could exploit this vulnerability using man-in-the-middle techniques to perform unauthorized actions.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111940 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:L/A:N)

CVEID: CVE-2016-2114
DESCRIPTION:
Samba could allow a remote attacker to bypass security restrictions, caused by the failure to enforce required smb signing. A remote attacker could exploit this vulnerability using man-in-the-middle techniques to perform unauthorized actions.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111941 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:L/A:N)

CVEID: CVE-2015-7560
DESCRIPTION:
Samba could allow a remote authenticated attacker to launch a symlink attack. By creating a symbolic link to a file or directory using SMB1 UNIX extensions and then issuing a non-UNIX SMB1, an attacker could exploit this vulnerability to overwrite access control lists on the directory.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111384 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)

CVEID: CVE-2016-2115
DESCRIPTION:
Samba could allow a remote attacker to bypass security restrictions, caused by the failure to protect the integrity of SMB client connections for IPC traffic. A remote attacker could exploit this vulnerability using man-in-the-middle techniques to perform unauthorized actions.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111942 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:L/A:N)

CVEID: CVE-2016-2118
DESCRIPTION:
Samba could allow a remote attacker to gain elevated privileges on the system, caused by the acceptance of inadequate authentication levels by the Microsoft Security Account Manager (SAM) and Local Security Authority (Domain Policy) (LSAD) remote protocols. An attacker could exploit this vulnerability using man-in-the-middle techniques to impersonate an authenticated user against the SAMR or LSAD service and gain access to the Security Account Manager (SAM) database. This vulnerability is also known as the BADLOCK bug.
CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111935 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)

CVEID: CVE-2016-0361
DESCRIPTION:
Spectrum Scale, with the Spectrum Scale GUI installed, could allow a remote unprivileged user to obtain sensitive information including ADMIN passwords used to access other components of the system.
CVSS Base Score: 7.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111931 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)

CVEID: CVE-2016-0392
DESCRIPTION:
IBM General Parallel File System could allow a local attacker to inject commands into setuid file parameters and execute commands as root.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112611 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

All fix pack levels of IBM DB2 V10.1, V10.5 and V11.1 editions listed below, running on AIX and Linux are affected, and only for those customers who have DB2® pureScale™ Feature installed.

IBM DB2 Enterprise Server Edition
IBM DB2 Advanced Enterprise Server Edition
IBM DB2 Advanced Workgroup Server Edition

Remediation/Fixes

The recommended solution is to apply the appropriate fix for this vulnerability.


FIX:

The fix for DB2 release V10.1 is in V10.1 FP6, V10.5 is in V10.5 FP8 and V11.1.1 is in V11.1.1 FP1, available for download from Fix Central.

Customers running DB2 V10.1 FP5 and lower can contact IBM technical support to obtain the GPFS eFix. Before installing the GPFS eFix, the DB2 level might need to be upgraded to the level that includes the supported GPFS level. Do not attempt to upgrade GPFS by any other means. The table below lists the DB2 releases, the prerequisite that needs to be installed first and the GPFS efix to request from IBM technical support.

DB2 Release Install following prerequisite before installing efix Obtain following GPFS efix from IBM technical support
10.1 AIX 64-bit
Linux 64-bit, x86-64
3.5.0.29 efix 6

The GPFS efix install instructions are available here: http://www-01.ibm.com/support/docview.wss?uid=swg27048484

Contact Technical Support:

In the United States and Canada dial 1-800-IBM-SERV
View the support contacts for other countries outside of the United States.
Electronically open a Service Request with DB2 Technical Support.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

Vulerability CVE-2016-0392 was reported to IBM by John Fitzpatrick at MWR InfoSecurity

Change History

July 26, 2016: Original version published.
July 29, 2016: Updated prerequisite with links to latest special build.
December 15, 2016: Added V11.1.1 FP1 Fix Central URL.
February 28, 2017: Added V10.1 FP6 Fix Central URL.

*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.

Document information

More support for: DB2 for Linux, UNIX and Windows
High Availability - PureScale

Software version: 10.1, 10.5, 11.1

Operating system(s): AIX, Linux

Software edition: Advanced Enterprise Server, Advanced Workgroup Server, Enterprise Server, Workgroup Server

Reference #: 1986595

Modified date: 01 March 2017