-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
Security Bulletin: Vulnerability in RC4 stream cipher
affects Rational DOORS Web Access (CVE-2015-2808)
24 April 2015
AusCERT Security Bulletin Summary
Product: IBM Rational DOORS Web Access
Operating System: Linux variants
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
CVE Names: CVE-2015-2808
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: Vulnerability in RC4 stream cipher affects Rational DOORS
Web Access (CVE-2015-2808)
More support for:
Rational DOORS Web Access
1.4, 22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 1.5, 18.104.22.168, 9.5, 22.214.171.124,
9.5.1, 126.96.36.199, 9.5.2, 188.8.131.52, 9.6, 184.108.40.206, 9.6.1, 220.127.116.11
Linux, Solaris, Windows
The RC4 Bar Mitzvah Attack for SSL/TLS affects IBM Rational DOORS Web Access.
Rational DOORS Web Access is affected by the following vulnerabilities
disclosed in and corrected by the JRE critical patch updates:
DESCRIPTION: The RC4 algorithm, as used in the TLS protocol and SSL protocol,
could allow a remote attacker to obtain sensitive information. An attacker
could exploit this vulnerability to remotely expose account credentials
without requiring an active man-in-the-middle session. Successful exploitation
could allow an attacker to retrieve credit card data or other sensitive
information. This vulnerability is commonly referred to as "Bar Mitzvah
CVSS Base Score: 5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/101851 for the current
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Affected Products and Versions
Rational DOORS Web Access version 9.6.1.x, 9.6.0.x, 9.5.2.x, 9.5.1.x, 9.5.0.x,
The only solution is to upgrade the JRE. You can upgrade the JRE after
installing Rational DOORS Web Access.
To obtain the updated version of the IBM JRE, contact IBM Support. Support can
help identify the latest JRE that is compatible with your operating system and
platform. Publicly available versions of the Oracle JRE are not supported with
Rational DOORS Web Access.
The following table presents Rational DOORS Web Access versions and the
compatible versions of IBM JRE.
Rational DOORS Web Access IBM JRE
9.6.0.x See "Workarounds and Mitigations"
9.6.1.x See "Workarounds and Mitigations"
To install the updated JRE in Rational DOORS Web Access, review the help
Upgrading the Rational DOORS Web Access JRE
You should verify applying this fix does not cause any compatibility issues.
The fix disables RC4 stream cipher by default. If you change this setting you
will expose yourself to the attack described above. IBM recommends that you
review your entire environment to identify other areas where you have enabled
the RC4 stream cipher and take appropriate mitigation and remediation actions.
For versions for Rational DOORS Web Access that are earlier than version
1.4.0.x, IBM recommends upgrading to a fixed, supported
version/release/platform of the product.
Workarounds and Mitigations
For Rational DOORS Web Access versions 1.4.0.x - 9.5.2.x, upgrade the JRE, as
described in "Remediations/Fixes".
For versions 9.6.0.x - 9.6.1.x, disable the RC4 cipher suite in your Java 7
1. Open the following file in a text editor: jre/lib/security/java.security
2. Add RC4 to jdk.tls.disabledAlgorithms
jdk.tls.disabledAlgorithms=SSLv3, RC4, D5, SHA1, RSA keySize < 1024
The minimum entries that are required for the POODLE and Bar Mitzvah
vulnerabilities are the following:
Users who enabled SP800-131a for Rational DOORS Web Access are not affected.
You should verify that applying this configuration change does not cause any
compatibility issues. Not disabling the RC4 stream cipher will expose yourself
to the attack described above. IBM recommends that you review your entire
environment to identify other areas where you have enabled the RC4 stream
cipher and take appropriate mitigation and remediation actions.
Get Notified about Future Security Bulletins
Subscribe to My Notifications to be notified of important product support
alerts like this.
Complete CVSS Guide
On-line Calculator V2
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
*23 April 2015: 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.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to email@example.com
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: firstname.lastname@example.org
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----