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Security Bulletin: Rational DOORS Web Access is affected by Apache Tomcat vulnerability (CVE-2016-6816)

Description

## Summary Some versions of Rational DOORS Web Access are shipped with an Apache Tomcat application server that contains security vulnerabilities. Apache Tomcat has been updated to incorporate fixes for these vulnerabilities. ## Vulnerability Details **CVEID:** [_CVE-2016-6816_](<https://vulners.com/cve/CVE-2016-6816>)** DESCRIPTION:** Apache Tomcat is vulnerable to HTTP response splitting attacks, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability to inject arbitrary HTTP headers and cause the server to return a split response, once the URL is clicked. This would allow the attacker to perform further attacks, such as Web cache poisoning or cross-site scripting, and possibly obtain sensitive information. CVSS Base Score: 6.1 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/119158_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/119158>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) ## Affected Products and Versions Rational DOORS Web Access version 9.6.1.8, 9.6.1.7, 9.6.1.4, 9.6.1.3, 9.6.1.2, 9.6.1.1, 9.6.1.0, 9.6.0.x, 9.5.2.x, 9.5.1.x, 9.5.0.x, 1.5.0.x. ## Remediation/Fixes Upgrade to one of the versions of Apache Tomcat shown in the table below. You can upgrade Apache Tomcat after installing Rational DOORS Web Access. The following table presents Rational DOORS Web Access versions and the released versions of Apache Tomcat. **Rational DOORS Web Access**| **Apache Tomcat** ---|--- 1.4.0.4| [6.0.53](<http://archive.apache.org/dist/tomcat/tomcat-6/v6.0.53/bin>) 1.5.0.x| [6.0.53](<http://archive.apache.org/dist/tomcat/tomcat-6/v6.0.53/bin>) 9.5.0.x| [6.0.53](<http://archive.apache.org/dist/tomcat/tomcat-6/v6.0.53/bin>) 9.5.1.x| [6.0.53](<http://archive.apache.org/dist/tomcat/tomcat-6/v6.0.53/bin>) 9.5.2.x| [6.0.53](<http://archive.apache.org/dist/tomcat/tomcat-6/v6.0.53/bin>) 9.6.0.x| [7.0.77](<http://archive.apache.org/dist/tomcat/tomcat-7/v7.0.77/bin>) 9.6.1.x| [7.0.77](<http://archive.apache.org/dist/tomcat/tomcat-7/v7.0.77/bin>) **Procedure:** 1. Download the required version of Apache Tomcat or later core zip file from either the Apache [Tomcat 6](<http://archive.apache.org/dist/tomcat/tomcat-6/>) or [Tomcat 7](<http://archive.apache.org/dist/tomcat/tomcat-7/>) Archive download site. For example: apache-tomcat-6.0.53-windows-x86.zip apache-tomcat-6.0.53.tar.gz apache-tomcat-7.0.77-windows-x64.zip apache-tomcat-7.0.77-windows-x86.zip apache-tomcat-7.0.77.tar.gz 2. Go to the Rational DOORS Web Access installation directory. For example: C:\Program Files\IBM\Rational\DOORS Web Access\9.version 3. Rename the **server** directory to **server.orig**. 4. Extract the downloaded Apache Tomcat core compressed file to **./server** in the Rational DOORS Web Access installation directory. 5. Delete the contents of the **./server/webapps** folder 6. Copy the following jar files from your **./server.orig/lib** directory to **./server/lib **commons-logging-1.1.x.jar dwa-catalina.jar log4j-1.2.x.jar log4j.properties 7. Remove the following jar files (only in Apache Tomcat 7) from the **./server/lib** directory tomcat7-websocket.jar websocket-api.jar 8. Copy your **./server.orig/festival** directory to **./server/festival**. 9. Copy the **./server.orig/conf/server.xml** file to **./server/conf/server.xml**. 10. Copy **./server.orig/webapps/*.war** to **./server/webapps**. 11. **Optional**: Copy any customized files from the **./server.orig** directory to **./server**. 12. **UNIX systems only:** Run the **./configure-festival.sh** command, as described in the help topic [Installing the web access server and the web access broker on Linux or Solaris systems](<https://www-01.ibm.com/support/knowledgecenter/SSYQBZ_9.6.0/com.ibm.rational.dwa.install.doc/topics/t_instdwasandbunix.html>). ## Workarounds and Mitigations None ##


Affected Software


CPE Name Name Version
ibm engineering requirements management doors web access 1.5
ibm engineering requirements management doors web access 1.5.0.1
ibm engineering requirements management doors web access 9.5
ibm engineering requirements management doors web access 9.5.0.1
ibm engineering requirements management doors web access 9.5.1
ibm engineering requirements management doors web access 9.5.1.1
ibm engineering requirements management doors web access 9.5.2
ibm engineering requirements management doors web access 9.5.2.1
ibm engineering requirements management doors web access 9.6
ibm engineering requirements management doors web access 9.6.0.1
ibm engineering requirements management doors web access 9.6.1
ibm engineering requirements management doors web access 9.6.1.1
ibm engineering requirements management doors web access 9.6.1.3
ibm engineering requirements management doors web access 9.6.1.4
ibm engineering requirements management doors web access 9.6.1.7
ibm engineering requirements management doors web access 9.6.1.8

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