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AUSCERT External Security Bulletin Redistribution
ESB-2017.2349.2
K11220361: LibTIFF vulnerability CVE-2015-1547
22 December 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 Products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2015-1547
Reference: ESB-2016.1873
Original Bulletin:
https://support.f5.com/csp/article/K11220361
Revision History: December 22 2017: Vendor updated source text with patched versions
September 15 2017: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
K11220361: LibTIFF vulnerability CVE-2015-1547
Security Advisory
Original Publication Date: Sep 14, 2017
Updated Date: Dec 21, 2017
Security Advisory Description
The NeXTDecode function in tif_next.c in LibTIFF allows remote attackers to
cause a denial of service (uninitialized memory access) via a crafted TIFF
image, as demonstrated by libtiff5.tif. (CVE-2015-1547)
Impact
This vulnerability allows a remote attacker to cause a denial-of-service (DoS)
attack. BIG-IP systems that use a BIG-IP AAM or BIG-IP WebAccelerator policy
configured with the Image Optimization settings enabled for TIFF files are
vulnerable to this issue.
Security Advisory Status
F5 Product Development has assigned ID 642659 (BIG-IP) to this vulnerability.
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 |Versions | | |
|Product |known to |known to be|Severity |Vulnerable component or |
| |be |not | |feature |
| |vulnerable|vulnerable | | |
|--------------+----------+-----------+----------+----------------------------|
| | |13.0.0 - | | |
| | |13.1.0 | | |
| | |12.0.0 - |Not | |
|BIG-IP LTM |None |12.1.3 |vulnerable|None |
| | |11.4.1 - | | |
| | |11.6.1 | | |
| | |11.2.1 | | |
|--------------+----------+-----------+----------+----------------------------|
| |13.0.0 | | |AAM or WebAccelerator policy|
| |12.0.0 - |13.1.0 | |configured with image |
|BIG-IP AAM |12.1.2 |12.1.3 |Medium |optimization enabled for |
| |11.4.1 - | | |TIFF files |
| |11.6.1 | | | |
|--------------+----------+-----------+----------+----------------------------|
| | |13.0.0 - | | |
| | |13.1.0 | | |
|BIG-IP AFM |None |12.0.0 - |Not |None |
| | |12.1.3 |vulnerable| |
| | |11.4.1 - | | |
| | |11.6.1 | | |
|--------------+----------+-----------+----------+----------------------------|
| | |13.0.0 - | | |
| | |13.1.0 | | |
|BIG-IP | |12.0.0 - |Not | |
|Analytics |None |12.1.3 |vulnerable|None |
| | |11.4.1 - | | |
| | |11.6.1 | | |
| | |11.2.1 | | |
|--------------+----------+-----------+----------+----------------------------|
| | |13.0.0 - | | |
| | |13.1.0 | | |
| | |12.0.0 - |Not | |
|BIG-IP APM |None |12.1.3 |vulnerable|None |
| | |11.4.1 - | | |
| | |11.6.1 | | |
| | |11.2.1 | | |
|--------------+----------+-----------+----------+----------------------------|
| | |13.0.0 - | | |
| | |13.1.0 | | |
| | |12.0.0 - |Not | |
|BIG-IP ASM |None |12.1.3 |vulnerable|None |
| | |11.4.1 - | | |
| | |11.6.1 | | |
| | |11.2.1 | | |
|--------------+----------+-----------+----------+----------------------------|
| | |13.0.0 - | | |
|BIG-IP DNS |None |13.1.0 |Not |None |
| | |12.0.0 - |vulnerable| |
| | |12.1.3 | | |
|--------------+----------+-----------+----------+----------------------------|
|BIG-IP Edge |None |11.2.1 |Not |None |
|Gateway | | |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
| | |11.4.1 - |Not | |
|BIG-IP GTM |None |11.6.1 |vulnerable|None |
| | |11.2.1 | | |
|--------------+----------+-----------+----------+----------------------------|
| | |13.0.0 - | | |
| | |13.1.0 | | |
|BIG-IP Link | |12.0.0 - |Not | |
|Controller |None |12.1.3 |vulnerable|None |
| | |11.4.1 - | | |
| | |11.6.1 | | |
| | |11.2.1 | | |
|--------------+----------+-----------+----------+----------------------------|
| | |13.0.0 - | | |
| | |13.1.0 | | |
|BIG-IP PEM |None |12.0.0 - |Not |None |
| | |12.1.3 |vulnerable| |
| | |11.4.1 - | | |
| | |11.6.1 | | |
|--------------+----------+-----------+----------+----------------------------|
|BIG-IP PSM |None |11.4.1 |Not |None |
| | | |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
| | | | |AAM or WebAccelerator policy|
|BIG-IP |11.2.1 |None |Medium |configured with image |
|WebAccelerator| | | |optimization enabled for |
| | | | |TIFF files |
|--------------+----------+-----------+----------+----------------------------|
| | |13.0.0 - | | |
| | |13.1.0 | | |
|BIG-IP WebSafe|None |12.0.0 - |Not |None |
| | |12.1.3 |vulnerable| |
| | |11.6.0 - | | |
| | |11.6.1 | | |
|--------------+----------+-----------+----------+----------------------------|
|ARX |None |6.2.0 - |Not |None |
| | |6.4.0 |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
|Enterprise |None |3.1.1 |Not |None |
|Manager | | |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
|BIG-IQ Cloud |None |4.4.0 - |Not |None |
| | |4.5.0 |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
|BIG-IQ Device |None |4.4.0 - |Not |None |
| | |4.5.0 |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
|BIG-IQ |None |4.4.0 - |Not |None |
|Security | |4.5.0 |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
|BIG-IQ ADC |None |4.5.0 |Not |None |
| | | |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
|BIG-IQ | |5.0.0 - |Not | |
|Centralized |None |5.3.0 |vulnerable|None |
|Management | |4.6.0 | | |
|--------------+----------+-----------+----------+----------------------------|
|BIG-IQ Cloud | | |Not | |
|and |None |1.0.0 |vulnerable|None |
|Orchestration | | | | |
|--------------+----------+-----------+----------+----------------------------|
|F5 iWorkflow |None |2.0.0 - |Not |None |
| | |2.3.0 |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
|LineRate |None |2.5.0 - |Not |None |
| | |2.6.2 |vulnerable| |
|--------------+----------+-----------+----------+----------------------------|
| | |5.0.0 - | | |
|Traffix SDC |None |5.1.0 |Not |None |
| | |4.0.0 - |vulnerable| |
| | |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.
Mitigation
To mitigate the risk posed by this vulnerability, you can disable image
optimization for TIFF files that use the BIG-IP AAM or BIG-IP WebAccelerator
policy, or ensure that attackers cannot modify TIFF files processed by the
BIG-IP AAM and WebAccelerator systems.
Impact of action: The impact of the suggested mitigation depends on the
specific environment. F5 recommends that you test any such changes during a
maintenance window and consider the possible impact on your specific
environment.
For more information about disabling image optimization, refer to:
* BIG-IP AAM: The Accelerating Images with Image Optimization chapter of the
BIG-IP Acceleration Implementations guide
* BIG-IP WebAccelerator: The Accelerating Images with Image Optimization
chapter of the BIG-IP WebAccelerator System Implementations guide
Note: For information about how to locate F5 product guides, refer to
K12453464: Finding product documentation on AskF5.
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