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AUSCERT External Security Bulletin Redistribution
ESB-2020.0978
Security updates available for ColdFusion | APSB20-16
19 March 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: ColdFusion 2016
ColdFusion 2018
Publisher: Adobe
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3794 CVE-2020-3761
Original Bulletin:
https://helpx.adobe.com/security/products/coldfusion/apsb20-16.html
- --------------------------BEGIN INCLUDED TEXT--------------------
Security updates available for ColdFusion | APSB20-16
+-----------+--------------+--------+
|Bulletin ID|Date Published|Priority|
+-----------+--------------+--------+
|APSB20-16 |March 17, 2020|2 |
+-----------+--------------+--------+
Summary
Adobe has released security updates for ColdFusion versions 2016 and 2018.
These updates resolve multiple critical vulnerabilities that could lead to
arbitrary code execution.
Affected Versions
+---------------+-----------------------------+--------+
|Product |Update number |Platform|
+---------------+-----------------------------+--------+
|ColdFusion 2016|Update 13 and earlier version|All |
+---------------+-----------------------------+--------+
|ColdFusion 2018|Update7and earlier versions |All |
+---------------+-----------------------------+--------+
Note:
ColdFusion servers deployed with the recommended lockdown installer are not
impacted by these vulnerabilities.
Solution
Adobe categorizes these updates with the following priority rating and
recommends users update their installations to the newest versions:
+-----------------+-----------------+---------+-----------------+-------------+
| Product | Updated Version |Platform | Priority rating |Availability |
+-----------------+-----------------+---------+-----------------+-------------+
|ColdFusion 2016 |Update 14 |All |2 |Tech note |
+-----------------+-----------------+---------+-----------------+-------------+
|ColdFusion 2018 |Update 8 |All |2 |Tech note |
+-----------------+-----------------+---------+-----------------+-------------+
Note:
Adobere commend supdating your ColdFusion JDK/JRE to the latest version of the
LTS releases for 1.8 and JDK 11. Applying the ColdFusion update without a
corresponding JDK update will NOT secure the server.Seethe relevant Tech Notes
for more details.
JEE Application Servers:
Users having JEE ColdFusion deployments (such as Tomcat, JBoss EAP) can refer
to the instructions in https://helpx.adobe.com/coldfusion/kb/
coldfusion-2018-update-8.html#jee
ColdFusion 11
ColdFusion 11 users are recommended to apply the mitigations steps outlined in
https://helpx.adobe.com/coldfusion/kb/coldfusion-11-mitigation-steps.html
Adobe also recommends customers apply the security configuration settings as
outlined on the ColdFusion Security page as well as review the respective
Lockdown guides.
o ColdFusion 2018 Auto-Lockdown guide
o ColdFusion 2016 Lockdown Guide
Vulnerability Details
+-------------+-------------------------------+--------+----------------------+
|Vulnerability| Vulnerability Impact |Severity| CVE Numbers |
| Category | | | |
+-------------+-------------------------------+--------+----------------------+
|Remote file |Arbitrary file read from the |Critical|CVE-2020-3761 |
|read |Coldfusion install directory | | |
+-------------+-------------------------------+--------+----------------------+
|File |Arbitrary code execution of | | |
|inclusion |files located in the webroot or|Critical|CVE-2020-3794 |
| |its subdirectory | | |
+-------------+-------------------------------+--------+----------------------+
Acknowledgements
Adobe would like to thank Wang Cheng of Venustech ADLab (CVE-2020-3761,
CVE-2020-3794) for reporting these issues and for working with Adobe to help
protect our customers.
ColdFusion JDK Requirement
COLDFUSION 2018 HF1 and above
For Application Servers
On JEE installations, set the following JVM flag, "-Djdk.serialFilter= !
org.mozilla.**;!com.sun.syndication.**;!org.apache.commons.beanutils.**", in
the respective startup file depending on the type of Application Server being
used.
For example:
Apache Tomcat Application Server: edit JAVA_OPTS in the 'Catalina.bat/sh' file
WebLogic Application Server: edit JAVA_OPTIONS in the 'startWeblogic.cmd' file
WildFly/EAP Application Server: edit JAVA_OPTS in the 'standalone.conf' file
Set the JVM flags on a JEE installation of ColdFusion, not on a standalone
installation.
COLDFUSION 2016 HF7 and above
This security update requires ColdFusion to be on JDK 8u121 or higher. Adobe
recommends that you must manually update your ColdFusion JDK/JRE to the latest
version. In case you do not update the JDK/JRE, simply applying the update
would NOT secure the server.
For Application Servers
Additionally, on JEE installations, set the following JVM flag,
"-Djdk.serialFilter= !org.mozilla.**;!com.sun.syndication.**;!
org.apache.commons.beanutils.**", in the respective startup file depending on
the type of Application Server being used.
For example:
On Apache Tomcat Application Server, edit JAVA_OPTS in the 'Catalina.bat/sh'
file
On WebLogic Application Server, edit JAVA_OPTIONS in the 'startWeblogic.cmd'
file
On a WildFly/EAP Application Server, edit JAVA_OPTS in the 'standalone.conf'
file
Set the JVM flags on a JEE installation of ColdFusion, not on a standalone
installation
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