Security Bulletin: TADDM 7.2.2.0, 7.2.1.5 and 7.2.0.10: Apache Xerces-J XML parser Denial of Service attack.

Flash (Alert)


Abstract

The Apache Xerces-J XML parser is vulnerable to a denial of service attack, triggered by malformed XML data, that can affect the security of IBM Tivoli Application Dependency Discovery Manager.

Content

VULNERABILITY DETAILS:
CVEID: CVE-2013-4002 (CVSS 7.1)
Description:
The Apache Xerces-J XML parser is vulnerable to a denial of service attack, triggered by malformed XML data. The malformed data causes the XML parser to consume CPU resource for several minutes before the data is eventually rejected. This behavior can be used to launch a denial of service attack against any Java server application which processes XML data supplied by remote users. The same technique can be used to consume CPU resources on client deployments of Java.
The IBM Java SDK ships a variant of the Apache Xerces-J XML parser (XML4J) which has the same vulnerability. The vulnerability applies to all versions of the IBM Java SDK.

CVSS Base Score: 7.1
CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/85260
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:C)


AFFECTED PRODUCTS AND VERSIONS:
TADDM 7.2.0.0 through 7.2.1.5 and TADDM 7.2.2.0 (eFix for that issue is included in TADDM 7.2.2.1)

REMEDIATION:

Fix* VRMF APAR How to acquire fix
efix_Xerces_20130522100951.zip 7.2.2.0 None Download EFix
efix_Xerces_FP520130716.zip 7.2.1.5 None Download EFix
efix_Xerces_FP1020120928.zip 7.2.0.10 None Download EFix
Please get familiar with eFix readme in etc/<efix_name>_readme.txt

Workaround(s):
None

Mitigation(s):
The only solution is to upgrade the TADDM environment with patched Apache Xerces-J XML parser library that prevent DoS attack from occurred.
EFixes are prepared to be installed only on top of TADDM 7.2.0.10, 7.2.1.5 and TADDM 7.2.2.0 respectively.
Be aware that eFix for that issue is included in TADDM 7.2.2.1 (7.2.2 FixPack 1).
If you need EFix for other TADDM version, please contact IBM Support.

REFERENCES:
IBM Java security alerts
X-Force Vulnerability Database
http://xforce.iss.net/xforce/xfdb/85260

Common Vulnerabilities and Exposures (CVE)
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4002

RELATED INFORMATION:
IBM Secure Engineering Web Portal


ACKNOWLEDGEMENT
None

CHANGE HISTORY
20 December 2013: 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 Flash.


Note: 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.

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Document information


More support for:

Tivoli Application Dependency Discovery Manager

Software version:

7.2, 7.2.1, 7.2.2

Operating system(s):

AIX, Linux, Solaris, Windows

Reference #:

1653371

Modified date:

2013-12-23

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