Security Bulletin
Summary
This interim fix provides instructions on upgrading Apache Tomcat from v5.5.36 to v7.0.90 in IBM Platform Symphony 6.1.1 and from v6.0.43 to v8.5.32 in IBM Platform Symphony 7.1 Fix Pack 1 in order to address security vulnerability CVE-2018-8014 in Tomcat.
Vulnerability Details
CVE-ID: CVE-2018-8014
Description: Apache Tomcat could provide weaker than expected security, caused by insecure default settings for the CORS filter. A remote attacker could exploit this vulnerability to launch further attacks on the system.
CVSS Base Score: 5.3
CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/143411 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Affected Products and Versions
Platform Symphony 6.1.1
Platform Symphony 7.1 Fix Pack 1
Remediation/Fixes
Applicability
Operating systems: Linux2.6-glibc2.3-x86_64
Cluster type: Single grid cluster
Packages
Product | APAR | Remediation/First Fix |
---|---|---|
IBM Platform Symphony 6.1.1 | P102656 | |
IBM Platform Symphony 7.1 Fix Pack 1 | P102656 | |
Apache Tomcat 7.0.90 | N/A | |
Apache Tomcat 8.5.32 | N/A |
For Platform Symphony 6.1.1
Optional prerequisite
For a Platform Symphony 6.1.1 cluster, you can optionally take advantage of a security service pack. To apply this interim fix along with the security service pack:
-
Install the service pack (sym-6.1.1-spk-Security-build227853).
-
Apply this interim fix (sym6.1.1_lnx26-lib23-x64_build497567.tar.gz) to your cluster.
If you do not want to apply the 6.1.1 security service pack, proceed to directly apply this interim fix to your cluster.
Installation
-
Log on to the primary management host as the cluster administrator and stop the WEBGUI service:
> egosh user logon -u Admin -x Admin
> source $EGO_TOP/cshrc.platform
> egosh service stop WEBGUI -
Log on to each management host in the cluster and back up the following files for recovery purposes:
$EGO_TOP/gui/1.2.8/tomcat/
$EGO_CONFDIR/../../gui/conf/catalina.policy
$EGO_CONFDIR/../../gui/conf/catalina.properties
$EGO_CONFDIR/../../gui/conf/server.xml
$EGO_TOP/gui/ego/1.2.8/platform/WEB-INF/web.xml
$EGO_TOP/gui/is/6.1.1/isgui/WEB-INF/web.xml
$EGO_TOP/gui/perf/1.2.8/perfgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/6.1.1/symgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/6.1.1/soamgui/WEB-INF/web.xml -
On each management host, copy the apache-tomcat-7.0.90.tar.gz package to a temporary folder and decompress the file:
> cp apache-tomcat-7.0.90.tar.gz /tmp
> tar zxvf apache-tomcat-7.0.90.tar.gz
> rm -rf apache-tomcat-7.0.90/conf/
> rm -rf apache-tomcat-7.0.90/work/
> rm -rf apache-tomcat-7.0.90/logs/ -
Copy the Tomcat folder:
> rm -rf $EGO_TOP/gui/1.2.8/tomcat
> cp -rf apache-tomcat-7.0.90 $EGO_TOP/gui/1.2.8/tomcat -
Copy the sym6.1.1_lnx26-lib23-x64_build497567.tar.gz package and decompress it:
> tar zxfo sym6.1.1_lnx26-lib23-x64_build497567.tar.gz -C $EGO_TOP -
If you ran the “egoconfig mghost shared_dir” command during installation to set up a shared location for configuration files, ensure that the configuration file is changed in the shared directory:
> cp $EGO_TOP/gui/conf/catalina.policy $EGO_CONFDIR/../../gui/conf/catalina.policy
> cp $EGO_TOP/gui/conf/catalina.properties $EGO_CONFDIR/../../gui/conf/catalina.properties
> cp $EGO_TOP/gui/conf/server.xml $EGO_CONFDIR/../../gui/conf/server.xml -
If you modified the $EGO_CONFDIR/../../gui/conf/server.xml configuration file for details such as the GUI service port, manually redo those changes.
-
Edit the web.xml files to add the following configuration:
-
Edit each of the following files:
$EGO_TOP/gui/ego/1.2.8/platform/WEB-INF/web.xml
$EGO_TOP/gui/is/6.1.1/isgui/WEB-INF/web.xml
$EGO_TOP/gui/perf/1.2.8/perfgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/6.1.1/symgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/6.1.1/soamgui/WEB-INF/web.xml -
Find the “<servlet-name>dwr-invoker</servlet-name>” line in the “</servlet>” section and add the following configuration:
<init-param>
<param-name>crossDomainSessionSecurity</param-name>
<param-value>false</param-value>
</init-param>
For example:
<servlet>
<servlet-name>dwr-invoker</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>crossDomainSessionSecurity</param-name>
<param-value>false</param-value>
</init-param>
</servlet>
-
-
On each management host, delete all subdirectories and files in the gui/work directory:
> rm -rf $EGO_TOP/gui/work/* -
On all client hosts, open your web browser and clear the browser cache.
-
Start the WEBGUI service:
> source $EGO_TOP/cshrc.platform
> egosh service start WEBGUI -
In the $EGO_TOP/gui/logs/catalina.out file, check whether the GUI version indicates version 7.0.90:
INFO: Server version: Apache Tomcat/7.0.90
Uninstallation
Follow the instructions in this section to uninstall this update in your cluster, if required.
-
Log on to the primary management host as the cluster administrator and stop the WEBGUI service:
> egosh user logon -u Admin -X Admin
> source $EGO_TOP/cshrc.platform
> egosh service stop WEBGUI - On each management host, restore the backup files:
-
Remove the Tomcat folder, which was introduced by this interim fix:
> rm -rf $EGO_TOP/gui/1.2.8/tomcat -
Restore the following folders and files from your backup:
$EGO_TOP/gui/1.2.8/tomcat/
$EGO_CONFDIR/../../gui/conf/catalina.policy
$EGO_CONFDIR/../../gui/conf/catalina.properties
$EGO_CONFDIR/../../gui/conf/server.xml
$EGO_TOP/gui/ego/1.2.8/platform/WEB-INF/web.xml
$EGO_TOP/gui/is/6.1.1/isgui/WEB-INF/web.xml
$EGO_TOP/gui/perf/1.2.8/perfgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/6.1.1/symgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/6.1.1/soamgui/WEB-INF/web.xml
-
-
Delete all subdirectories and files in the following directory:
> rm -rf $EGO_TOP/gui/work/* -
On all client hosts, open your web browser and clear the browser cache.
-
Start the WEBGUI service:
> source $EGO_TOP/cshrc.platform
> egosh service start WEBGUI
For Platform Symphony 7.1 Fix Pack 1
Installation
-
Log on to the primary management host as the cluster administrator and stop the WEBGUI service:
> egosh user logon -u Admin -x Admin
> source $EGO_TOP/cshrc.platform
> egosh service stop WEBGUI -
Log on to each management host in the cluster and back up the following files for recovery purposes:
$EGO_TOP/gui/3.1/tomcat/
$EGO_CONFDIR/../../gui/conf/catalina.policy
$EGO_CONFDIR/../../gui/conf/catalina.properties
$EGO_CONFDIR/../../gui/conf/server.xml$EGO_TOP/gui/ego/3.1/platform/WEB-INF/web.xml
$EGO_TOP/gui/is/7.1/isgui/WEB-INF/web.xml
$EGO_TOP/gui/perf/3.1/perfgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/7.1/soamgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/7.1/symgui/WEB-INF/web.xml -
Copy the apache-tomcat-8.5.32.tar.gz package to a temporary folder and decompress the file:
> cp apache-tomcat-8.5.32.tar.gz /tmp
> tar zxvf apache-tomcat-8.5.32.tar.gz
> rm -rf apache-tomcat-8.5.32/conf/
> rm -rf apache-tomcat-8.5.32/work/
> rm -rf apache-tomcat-8.5.32/logs/ -
Copy the Tomcat folder:
> rm -rf $EGO_TOP/gui/3.1/tomcat
> cp -rf apache-tomcat-8.5.32 $EGO_TOP/gui/3.1/tomcat -
Copy the sym7.1_lnx26-lib23-x64_build497568.tar.gz package and decompress it:
> tar zxfo sym7.1_lnx26-lib23-x64_build497568.tar.gz -C $EGO_TOP -
If you ran the “egoconfig mghost shared_dir” command during installation to set up a shared location for configuration files, ensure that the configuration file is changed in the shared directory:
> cp $EGO_TOP/gui/conf/catalina.policy $EGO_CONFDIR/../../gui/conf/catalina.policy
> cp $EGO_TOP/gui/conf/catalina.properties $EGO_CONFDIR/../../gui/conf/catalina.properties
> cp $EGO_TOP/gui/conf/server.xml $EGO_CONFDIR/../../gui/conf/server.xml -
If you modified the $EGO_CONFDIR/../../gui/conf/server.xml configuration file for details such as the GUI service port, manually redo those changes.
-
Edit the web.xml files to add the following configuration:
-
Edit each of the following files:
$EGO_TOP/gui/ego/3.1/platform/WEB-INF/web.xml
$EGO_TOP/gui/is/7.1/isgui/WEB-INF/web.xml
$EGO_TOP/gui/perf/3.1/perfgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/7.1/symgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/7.1/soamgui/WEB-INF/web.xml -
Find the “<servlet-name>dwr-invoker</servlet-name>” line in the “</servlet>” section and add the following configuration:
<init-param>
<param-name>crossDomainSessionSecurity</param-name>
<param-value>false</param-value>
</init-param>
For example:
<servlet>
<servlet-name>dwr-invoker</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>crossDomainSessionSecurity</param-name>
<param-value>false</param-value>
</init-param>
</servlet>
-
-
On each management host, delete all subdirectories and files in the following directory:
> rm -rf $EGO_TOP/gui/work/* -
On all client hosts, open your web browser and clear the browser cache.
-
Start the WEBGUI service:
> source $EGO_TOP/cshrc.platform
> egosh service start WEBGUI -
In the $EGO_TOP/gui/logs/catalina.out file, check whether the GUI version indicates version 8.5.32:
INFO: Server version: Apache Tomcat/8.5.32
Uninstallation
Follow the instructions in this section to uninstall this update in your cluster, if required.
-
Log on to the primary management host as the cluster administrator and stop the WEBGUI service:
> egosh user logon -u Admin -x Admin
> source $EGO_TOP/cshrc.platform
> egosh service stop WEBGUI -
On each management host, restore the backup files:
-
Remove the Tomcat folder, which was introduced by this interim fix:
> rm -rf $EGO_TOP/gui/3.1/tomcat -
Restore the following folders and files from your backup:
$EGO_TOP/gui/3.1/tomcat
$EGO_CONFDIR/../../gui/conf/catalina.policy
$EGO_CONFDIR/../../gui/conf/catalina.properties
$EGO_CONFDIR/../../gui/conf/server.xml
$EGO_TOP/gui/ego/3.1/platform/WEB-INF/web.xml
$EGO_TOP/gui/is/7.1/isgui/WEB-INF/web.xml
$EGO_TOP/gui/perf/3.1/perfgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/7.1/soamgui/WEB-INF/web.xml
$EGO_TOP/gui/soam/7.1/symgui/WEB-INF/web.xml
-
-
Delete all subdirectories and files in the following directory:
> rm -rf $EGO_TOP/gui/work/* -
On all client hosts, open your web browser and clear the browser cache.
-
Start the WEBGUI service:
> source $EGO_TOP/cshrc.platform
> egosh service start WEBGUI
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
None
Change History
26 July 2018: Original version published
*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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
01 September 2021
UID
ibm10718917