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AUSCERT External Security Bulletin Redistribution
ESB-2014.0566
Security Bulletin: IBM Security AppScan Enterprise can be affected by
multiple vulnerabilities in Apache Tomcat (CVE-2014-0033, CVE-2013-4322)
23 April 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Security AppScan Enterprise
Publisher: IBM
Operating System: Linux variants
Windows
Impact/Access: Denial of Service -- Remote/Unauthenticated
Unauthorised Access -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2014-0033 CVE-2013-4322
Reference: ESB-2014.0563
ESB-2014.0468
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21670941
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Security Bulletin: IBM Security AppScan Enterprise can be affected by multiple
vulnerabilities in Apache Tomcat (CVE-2014-0033, CVE-2013-4322)
Document information
More support for:
Security AppScan Enterprise
Software version:
8.5, 8.6, 8.7.0.0, 8.8, 9.0
Operating system(s):
Linux, Windows
Reference #:
1670941
Modified date:
2014-04-21
Security Bulletin
Summary
Apache Tomcat that is bundled with AppScan Enterprise is vulnerable to remote
hijacking and denial of service vulnerabilities.
Vulnerability Details
CVE ID:
CVE-2014-0033
DESCRIPTION:
The Apache Tomcat version that is bundled with AppScan Enterprise could allow
a remote attacker to hijack a valid user's session, caused by an error even
when disableURLRewriting is enabled. By persuading a victim to visit a
specially-crafted link and log into the application, a remote attacker could
exploit this vulnerability to hijack another user's account and possibly
launch further attacks on the system.
The attack does not require local network access nor does it require
authentication, but some degree of specialized knowledge and techniques are
required. An exploit would not impact accessibility of the system or the
confidentiality of information, however the integrity of data could be
compromised.
CVSS:
CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/91423 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)
CVE ID:
CVE-2013-4322
DESCRIPTION:
The Apache Tomcat version that is bundled with AppScan Enterprise is
vulnerable to a denial of service, caused by an incomplete fix related to the
processing of chunked transfer coding without properly handling a large total
amount of chunked data or whitespace characters in an HTTP header value. A
remote attacker could exploit this vulnerability to cause a denial of service.
The attack does not require local network access, authentication, or
specialized knowledge and techniques. An exploit would not impact the
confidentiality of information or the integrity of data, however accessibility
of the system could be compromised.
CVSS:
CVSS Base Score: 5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/91625 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Affected Products and Versions
- - IBM Rational AppScan Enterprise 8.5
- - IBM Rational AppScan Enterprise 8.6
- - IBM Security AppScan Enterprise 8.7
- - IBM Security AppScan Enterprise 8.8
- - IBM Security AppScan Enterprise 9.0
Remediation/Fixes
Apply the FixPack / iFix corresponding to the version you have installed:
Product Version Remediation/First Fix
IBM Rational AppScan Enterprise 8.5 8.5 iFix - June 27, 2014
IBM Security AppScan Enterprise 8.6 8.6 iFix - June 27, 2014
IBM Security AppScan Enterprise 8.7 8.7 iFix - June 27, 2014
IBM Security AppScan Enterprise 8.8.0.0 8.8.0.1 - April 30, 2014
IBM Security AppScan Enterprise 9.0.0.0 9.0.0.1 - June 13, 2014
Workarounds and Mitigations
Upgrading Tomcat in AppScan Enterprise, perform the following actions:
1. Download the latest 32-bit version of Tomcat 7 (Core) from tomcat.apache.org
and unzip the contents to a temporary location
2. Stop the IBM Security AppScan Enterprise Server - Tomcat service
3. Make a backup copy of your existing tomcat folder, which is installed in
the following location (default location):
C:\Program Files (x86)\IBM\AppScan Enterprise\JazzTeamServer\server\tomcat
4. Delete the current bin and lib folders under
C:\Program Files (x86)\IBM\AppScan Enterprise\JazzTeamServer\server\tomcat
5. Copy the bin and lib folder from your newly downloaded Tomcat 7 and put
them in
C:\Program Files (x86)\IBM\AppScan Enterprise\JazzTeamServer\server\tomcat
6. Start the IBM Security AppScan Enterprise Server - Tomcat service
7. In the appscanservertomcat-stderr.yyyy-mm-dd.log file found in
C:\Program Files (x86)\IBM\AppScan Enterprise\JazzTeamServer\server\tomcat\log
look for the following entry
INFO: Starting Servlet Engine: Apache Tomcat/7.0.53
to validate the current version of tomcat that is running.
References
Complete CVSS Guide
On-line Calculator V2
CVE-2013-4322
CVE-2014-0033
http://xforce.iss.net/xforce/xfdb/91423
http://xforce.iss.net/xforce/xfdb/91625
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
None
*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
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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