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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2017.2789.3
F5 Security Advisory Linux kernel vulnerabilities
(CVE-2016-10088, CVE-2016-6136)
4 April 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 Products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2016-10088 CVE-2016-6136
Reference: ASB-2016.0103
ESB-2017.0507
ESB-2016.2687
ESB-2016.2602
ESB-2016.2592
ESB-2016.2086
Original Bulletin:
https://support.f5.com/csp/article/K54610514
https://support.f5.com/csp/article/K90803619
Comment: This bulletin contains two (2) F5 Networks security advisories.
Revision History: April 4 2018: Updates available in original bulletin K90803619
March 26 2018: Updates available in original bulletin K54610514
November 2 2017: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
K54610514:Linux kernel vulnerability CVE-2016-10088
Security Advisory
Original Publication Date: 28 Jan, 2017
Latest Publication Date: 24 Mar, 2018
Security Advisory Description
The sg implementation in the Linux kernel through 4.9 does not properly
restrict write operations in situations where the KERNEL_DS option is set,
which allows local users to read or write to arbitrary kernel memory locations
or cause a denial of service (use-after-free) by leveraging access to a /dev/sg
device, related to block/bsg.c and drivers/scsi/sg.c. NOTE: this vulnerability
exists because of an incomplete fix for CVE-2016-9576. (CVE-2016-10088)
Impact
This vulnerability may allow locally authenticated users to read or write to
arbitrary kernel memory locations or cause a denial of service (DoS).
Note: The exploit requires local shell access and can provide a user with root
access to the system. On BIG-IP systems, shell access includes root privileges,
making this exploit unnecessary.
Security Advisory Status
F5 Product Development has assigned IDs 640766 and 640768 (BIG-IP) and IDs
640766 and 640768 (BIG-IQ, Enterprise Manager, and iWorkflow) to this
vulnerability. Additionally, BIG-IP iHealth may list Heuristic H54610514 on the
Diagnostics > Identified > Low screen.
To determine if your release is known to be vulnerable, the components or
features that are affected by the vulnerability, and for information about
releases or hotfixes that address the vulnerability, refer to the following
table.
+---------------+----------------+-----------------+----------+----------------+
| |Versions known |Versions known to| |Vulnerable |
|Product |to be vulnerable|be not vulnerable|Severity |component or |
| | | | |feature |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 - 13.1.0 |13.1.0.4 | | |
| |12.0.0 - 12.1.2 |12.1.3 | | |
|BIG-IP LTM |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 |Low |Linux kernel |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 - 13.1.0 |13.1.0.4 | | |
|BIG-IP AAM |12.0.0 - 12.1.2 |12.1.3 |Low |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 - 13.1.0 |13.1.0.4 | | |
|BIG-IP AFM |12.0.0 - 12.1.2 |12.1.3 |Low |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 - 13.1.0 |13.1.0.4 | | |
|BIG-IP |12.0.0 - 12.1.2 |12.1.3 | | |
|Analytics |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 |Low |Linux kernel |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 - 13.1.0 |13.1.0.4 | | |
| |12.0.0 - 12.1.2 |12.1.3 | | |
|BIG-IP APM |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 |Low |Linux kernel |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 - 13.1.0 |13.1.0.4 | | |
| |12.0.0 - 12.1.2 |12.1.3 | | |
|BIG-IP ASM |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 |Low |Linux kernel |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP DNS |13.0.0 - 13.1.0 |13.1.0.4 |Low |Linux kernel |
| |12.0.0 - 12.1.2 |12.1.3 | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge |11.2.1 |None |Low |Linux kernel |
|Gateway | | | | |
+---------------+----------------+-----------------+----------+----------------+
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
|BIG-IP GTM |11.4.0 - 11.5.4 |11.5.5 |Low |Linux kernel |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 - 13.1.0 |13.1.0.4 | | |
|BIG-IP Link |12.0.0 - 12.1.2 |12.1.3 | | |
|Controller |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 |Low |Linux kernel |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 - 13.1.0 |13.1.0.4 | | |
|BIG-IP PEM |12.0.0 - 12.1.2 |12.1.3 |Low |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM |11.4.0 - 11.4.1 |None |Low |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP |11.2.1 |None |Low |Linux kernel |
|WebAccelerator | | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 - 13.1.0 |13.1.0.4 |Low | |
|BIG-IP WebSafe |12.0.0 - 12.1.2 |12.1.3 | |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
+---------------+----------------+-----------------+----------+----------------+
|ARX |None |6.2.0 - 6.4.0 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise |3.1.1 |None |Low |Linux kernel |
|Manager | | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud |4.0.0 - 4.5.0 |None |Low |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device |4.2.0 - 4.5.0 |None |Low |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|4.0.0 - 4.5.0 |None |Low |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC |4.5.0 |None |Low |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ |5.0.0 - 5.3.0 | | | |
|Centralized |4.6.0 |5.4.0 |Low |Linux kernel |
|Management | | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud | | | | |
|and |1.0.0 |None |Low |Linux kernel |
|Orchestration | | | | |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow |2.0.0 - 2.3.0 |None |Low |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|LineRate |None |3.0.0 - 3.1.1 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|Traffix SDC |None |5.0.0 - 5.1.0 |Not |None |
| | |4.0.0 - 4.4.0 |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
Security Advisory Recommended Actions
If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Versions known to be not vulnerable column. If the table lists only an
older version than what you are currently running, or does not list a
non-vulnerable version, then no upgrade candidate currently exists.
To determine the necessary upgrade path for your BIG-IQ system, you should
understand the BIG-IQ product offering name changes. For more information,
refer to K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems
.
Mitigation
None
Supplemental Information
o K9970: Subscribing to email notifications regarding F5 products
o K9957: Creating a custom RSS feed to view new and updated documents
o K4602: Overview of the F5 security vulnerability response policy
o K4918: Overview of the F5 critical issue hotfix policy
o K167: Downloading software and firmware from F5
o K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
o K9502: BIG-IP hotfix and point release matrix
o K15106: Managing BIG-IQ product hotfixes
o K15113: BIG-IQ hotfix matrix
================================================================================
K90803619:Linux kernel vulnerability CVE-2016-6136
Security Advisory
Original Publication Date: 28 Mar, 2017
Latest Publication Date: 04 Apr, 2018
Security Advisory Description
Race condition in the audit_log_single_execve_arg function in kernel/auditsc.c
in the Linux kernel through 4.7 allows local users to bypass intended
character-set restrictions or disrupt system-call auditing by changing a
certain string, aka a "double fetch" vulnerability. (CVE-2016-6136)
Impact
Locally authenticated users may be able to bypass audit restrictions resulting
in the disclosure of local information.
Security Advisory Status
F5 Product Development has assigned IDs 648879 and 653065 (BIG-IP), ID 652525
(BIG-IQ), ID 652524 (Enterprise Manager), and ID 456789 (ARX) to this
vulnerability. Additionally, BIG-IP iHealth may list Heuristic H90803619 on the
Diagnostics > Identified > Medium page.
To determine if your release is known to be vulnerable, the components or
features that are affected by the vulnerability, and for information about
releases or hotfixes that address the vulnerability, refer to the following
table.
+---------------+----------------+-----------------+----------+----------------+
| |Versions known |Versions known to| |Vulnerable |
|Product |to be vulnerable|be not vulnerable|Severity |component or |
| | | | |feature |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
| |13.0.0 |12.1.3 | | |
|BIG-IP LTM |12.0.0 - 12.1.2 |12.1.2 HF1 |Medium |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
| |13.0.0 |12.1.3 | | |
|BIG-IP AAM |12.0.0 - 12.1.2 |12.1.2 HF1 |Medium |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
| |13.0.0 |12.1.3 | | |
|BIG-IP AFM |12.0.0 - 12.1.2 |12.1.2 HF1 |Medium |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
| |13.0.0 |12.1.3 | | |
|BIG-IP |12.0.0 - 12.1.2 |12.1.2 HF1 |Medium |Linux kernel |
|Analytics |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
| |13.0.0 |12.1.3 | | |
|BIG-IP APM |12.0.0 - 12.1.2 |12.1.2 HF1 |Medium |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
| |13.0.0 |12.1.3 | | |
|BIG-IP ASM |12.0.0 - 12.1.2 |12.1.2 HF1 |Medium |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
|BIG-IP DNS |13.0.0 |12.1.3 |Medium |Linux kernel |
| |12.0.0 - 12.1.2 |12.1.2 HF1 | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge |11.2.1 |None |Medium |Linux kernel |
|Gateway | | | | |
+---------------+----------------+-----------------+----------+----------------+
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
|BIG-IP GTM |11.4.0 - 11.5.4 |11.5.5 |Medium |Linux kernel |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
| |13.0.0 |12.1.3 | | |
|BIG-IP Link |12.0.0 - 12.1.2 |12.1.2 HF1 |Medium |Linux kernel |
|Controller |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
| |13.0.0 |12.1.3 | | |
|BIG-IP PEM |12.0.0 - 12.1.2 |12.1.2 HF1 |Medium |Linux kernel |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
| |11.4.0 - 11.5.4 |11.5.5 | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM |11.4.0 - 11.4.1 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP |11.2.1 |None |Medium |Linux kernel |
|WebAccelerator | | | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.1.0 |13.0.1 | | |
|BIG-IP WebSafe |13.0.0 |12.1.3 |Medium |Linux kernel |
| |12.0.0 - 12.1.2 |12.1.2 HF1 | | |
| |11.6.0 - 11.6.1 |11.6.2 - 11.6.3 | | |
+---------------+----------------+-----------------+----------+----------------+
|ARX |None |6.2.0 - 6.4.0 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise |3.1.1 |None |Medium |Linux kernel |
|Manager | | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud |4.0.0 - 4.5.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device |4.2.0 - 4.5.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|4.0.0 - 4.5.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC |4.5.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ |5.0.0 - 5.3.0 | | | |
|Centralized |4.6.0 |None |Medium |Linux kernel |
|Management | | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud | | | | |
|and |1.0.0 |None |Medium |Linux kernel |
|Orchestration | | | | |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow |2.0.0 - 2.3.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|LineRate |None |2.5.0 - 2.6.2 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|Traffix SDC |5.0.0 - 5.1.0 |None |Medium |Linux kernel |
| |4.0.0 - 4.4.0 | | | |
+---------------+----------------+-----------------+----------+----------------+
Security Advisory Recommended Actions
If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Versions known to be not vulnerable column. If the table lists only an
older version than what you are currently running, or does not list a
non-vulnerable version, then no upgrade candidate currently exists.
To determine the necessary upgrade path for your BIG-IQ system, you should
understand the BIG-IQ product offering name changes. For more information,
refer to K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems
.
Mitigation
To mitigate this vulnerability, you should permit management access to F5
products only over a secure network and limit shell access to only trusted
users. For more information, refer to K13309: Restricting access to the
Configuration utility by source IP address (11.x - 13.x) and K13092: Overview
of securing access to the BIG-IP system.
Supplemental Information
o K9970: Subscribing to email notifications regarding F5 products
o K9957: Creating a custom RSS feed to view new and updated documents
o K4602: Overview of the F5 security vulnerability response policy
o K4918: Overview of the F5 critical issue hotfix policy
o K167: Downloading software and firmware from F5
o K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
o K9502: BIG-IP hotfix and point release matrix
o K15106: Managing BIG-IQ product hotfixes
o K15113: BIG-IQ hotfix matrix
- --------------------------END INCLUDED TEXT--------------------
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===========================================================================
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