Security Bulletin
Summary
Multiple vulnerabilities in Open Source Apache Tomcat reported by The Apache Software Foundation affect IBM Tivoli Application Dependency Discovery Manager
Vulnerability Details
CVEID: CVE-2016-0762
DESCRIPTION: Apache Tomcat could allow a remote attacker to obtain sensitive information, caused by the failure to process the user supplied password if the specified user name does not exist by the Realm implementation. An attacker could exploit this vulnerability to conduct a timing attack and determine valid usernames on the system.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118407 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID: CVE-2016-5018
DESCRIPTION: Apache Tomcat could allow a local attacker to bypass security restrictions. An attacker could exploit this vulnerability using a Tomcat utility method to bypass a configured SecurityManager.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118406 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2016-6794
DESCRIPTION: Apache Tomcat could allow a local attacker to obtain sensitive information, caused by an error in the system property replacement feature. An attacker could exploit this vulnerability to bypass the SecurityManager and read system properties.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118405 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID: CVE-2016-6796
DESCRIPTION: Apache Tomcat could allow a local attacker to bypass security restrictions. By modifying configuration parameters for the JSP Servlet, an attacker could exploit this vulnerability to bypass a configured SecurityManager.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118404 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2016-6797
DESCRIPTION: Apache Tomcat could allow a local attacker to gain unauthorized access to the system, caused by an error in the ResourceLinkFactory. An attacker could exploit this vulnerability to gain access to arbitrary global JNDI resources.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118403 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: 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 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)
CVEID: CVE-2016-8745
DESCRIPTION: Apache Tomcat could allow a remote attacker to obtain sensitive information, caused by the improper handling of the send file code for the NIO HTTP connector when the Connector code for Tomcat 8.5.x is refactored. An attacker could exploit this vulnerability to obtain the session ID and the response body.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/119642 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
TADDM 7.2.2.0 - 7.2.2.5
TADDM 7.3.0.0 (TADDM 7.3.0.1-3 - not affected - using WebSphere Liberty Profile)
Remediation/Fixes
There are eFixes prepared on top of the latest released FixPack for each stream:
| Fix | VRMF | APAR | How to acquire fix |
| efix_TADDM73_tomcat7077_201411291020_1.zip | 7.3.0.0 | None | Download eFix |
| efix_TADDM722_tomcat7077_FP520160209.zip | 7.2.2.5 | None | Download eFix |
Please get familiar with eFix readme in etc/<efix_name>_readme.txt
Note that the eFix requires manual deletion of the external/apache-tomcat directory.
Workarounds and Mitigations
The solution is to upgrade TADDM to use Tomcat version 7.0.77
eFixes are prepared on top of the latest FixPack release, but if there were any custom changes made in a previous version of Apache Tomcat, please reapply them after the upgrade is finished.
Get Notified about Future Security Bulletins
References
Change History
05 May 2017: Updated file name and efix link.
02 May 2017: 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:
17 June 2018
UID
swg22002631