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Security Bulletin: Potential Denial of Service security vulnerability in Rational Build Forge and Rational Automation Framework running on WAS or eWAS due to Java HashTable implementation vulnerability (CVE-2012-0193)

Security Bulletin


Products bundled with an embedded IBM WebSphere Application Server (eWAS) or IBM WebSphere Application Server (WAS) are subject to a potential security exposure due to the Java HashTable implementation which can result in a Denial of Service (DoS) exposure when using Web based applications such as IBM Rational Build Forge or IBM Rational Automation Framework (RAF).

Vulnerability Details

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CVE ID: CVE-2012-0193

Description: IBM WebSphere Application Server (WAS) 6.0 through, 6.1 before, 7.0 before, and 8.0 before computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.

Review security bulletin 1577532: Potential security vulnerability when using Web based applications on IBM WebSphere Application Server due to Java HashTable implementation vulnerability (PM53930/PM57565) for more details.

CVE ID: CVE-2012-0022

Description: Apache Tomcat 5.5.x before 5.5.35, 6.x before 6.0.34, and 7.x before 7.0.23 uses an inefficient approach for handling parameters, which allows remote attackers to cause a denial of service (CPU consumption) via a request that contains many parameters and parameter values, a different vulnerability than CVE-2011-4858.

Affected Products and Versions

If your product was installed with the WebSphere Application Server or eWAS version 6.1 or 7.0 server that was shipped with your product, you are impacted by a security vulnerability which can cause performance or denial of service (DoS) issues.
Products deployed on Apache Tomcat 5.5.34 or earlier are impacted by this vulnerability which can cause performance or Denial of Service (DoS) issues.


You are advised to read the instructions in this Interim Fix document linked below and update your application servers to correct this issue:

PM53930: Collisions in HashTable May Cause DoS Vulnerability

If you are running Rational Build Forge,, or, or older releases in those streams, follow the directions directly.

If you are running Rational Build Forge or, install Tomcat version 7.0.23 (or later) instead of the noted 5.5.x as outlined in the note. The instructions are otherwise the same.

Attempting to use Tomcat 7.0.x with Rational Build Forge installs that shipped with Tomcat 5.5.9 will result in a non-functional install.

Workarounds and Mitigations


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Related information



Change History

* 3 February 2012: Original copy 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.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Cross reference information
Segment Product Component Platform Version Edition
Software Development Rational Automation Framework AIX, Linux, Solaris, Windows 3.0,

Document information

More support for: Rational Build Forge

Software version: 7.0.2,,,,,,,, 7.1, 7.1.1,,,,, 7.1.2,,,, 7.1.3,

Operating system(s): AIX, Linux, Solaris, Windows

Reference #: 1580154

Modified date: 07 February 2012

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