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                             CERT-Renater

                 Note d'Information No. 2021/VULN183
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DATE                : 26/03/2021

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Adobe ColdFusion versions prior to
                      2016 Update 17, 2018 Update 11, 2021 Update 1.

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https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html
_____________________________________________________________________

Security updates available for Adobe ColdFusion | APSB21-16
Bulletin ID 	Date Published 	Priority
APSB21-16 	March 22, 2021 	2


Summary

Adobe has released security updates for ColdFusion versions 2021, 2016
and 2018. These updates resolve a  vulnerability rated moderate that
could lead to arbitrary code execution. 


Affected Versions

Product 	Update number 	Platform

ColdFusion 2016   Update 16 and earlier version   	All
ColdFusion 2018   Update 10 and earlier versions   	All
ColdFusion 2021   Version 2021.0.0.323925               All


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 17   	All 	2 	Tech note
ColdFusion 2018  Update 11 	All 	2 	Tech note
ColdFusion 2021  Update 1	All 	2 	Tech note

Note:

Adobe recommends updating 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.  See the
relevant Tech Notes for more details.

Adobe  also recommends customers apply the security configuration
settings as outlined on the ColdFusion Security page as well as review
the respective Lockdown guides.   

    ColdFusion 2018 Auto-Lockdown guide
    ColdFusion 2016 Lockdown Guide
    ColdFusion 2021 Lockdown Guide


Vulnerability Details

Vulnerability Category 	Vulnerability Impact   Severity    CVE Numbers
Improper Input Validation 	Arbitrary Code Execution   Moderate 	
CVE-2021-21087


Acknowledgements

Adobe would like to thank Josh Lane for reporting the relevant 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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Revisions

March 26, 2021: Updated Severity rating for CVE-2021-21087.

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