RHSA-2013:0221 - Security Advisory

Topic

JBoss Enterprise BRMS Platform 5.3.1, which fixes multiple security issues,
various bugs, and adds enhancements, is now available from the Red Hat
Customer Portal.

The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

This release of JBoss Enterprise BRMS Platform 5.3.1 serves as a
replacement for JBoss Enterprise BRMS Platform 5.3.0, and includes bug
fixes and enhancements. Refer to the JBoss Enterprise BRMS Platform 5.3.1
Release Notes for information on the most significant of these changes. The
Release Notes will be available shortly from
https://access.redhat.com/knowledge/docs/

This erratum provides the standalone counterpart to RHSA-2012:1573.

Description

Security fixes:

An attack technique against the W3C XML Encryption Standard when block
ciphers were used in CBC mode could allow a remote attacker to conduct
chosen-ciphertext attacks, leading to the recovery of the entire plain text
of a particular cryptogram. (CVE-2011-1096)

JBoss Web Services leaked side-channel data when distributing symmetric
keys (for XML encryption), allowing a remote attacker to recover the entire
plain text form of a symmetric key. (CVE-2011-2487)

Spring framework could possibly evaluate Expression Language (EL)
expressions twice, allowing a remote attacker to execute arbitrary code in
the context of the application server, or to obtain sensitive information
from the server. Manual action is required to apply this fix. Refer to the
Solution section. (CVE-2011-2730)

When an application used FORM authentication, along with another component
that calls request.setUserPrincipal() before the call to
FormAuthenticator#authenticate() (such as the Single-Sign-On valve), it was
possible to bypass the security constraint checks in the FORM authenticator
by appending "/j_security_check" to the end of a URL. (CVE-2012-3546)

An XSS flaw allowed a remote attacker to perform an XSS attack against
victims using the JMX Console. (CVE-2011-4575)

SecurityAssociation.getCredential() returned the previous credential if no
security context was provided. Depending on the deployed applications, this
could possibly allow a remote attacker to hijack the credentials of a
previously-authenticated user. (CVE-2012-3370)

Configuring the JMX Invoker to restrict access to users with specific roles
did not actually restrict access, allowing remote attackers with valid JMX
Invoker credentials to perform JMX operations accessible to roles they are
not a member of. (CVE-2012-5478)

twiddle.sh accepted credentials as command line arguments, allowing local
users to view them via a process listing. (CVE-2009-5066)

It was found that NonManagedConnectionFactory would log the username and
password in plain text when an exception was thrown. This could lead to the
exposure of authentication credentials if local users had permissions to
read the log file. (CVE-2012-0034)

The JMXInvokerHAServlet and EJBInvokerHAServlet invoker servlets allow
unauthenticated access by default in some profiles. The security
interceptor's second layer of authentication prevented direct exploitation
of this flaw. If the interceptor was misconfigured or inadvertently
disabled, this flaw could lead to arbitrary code execution in the context
of the user running the JBoss server. (CVE-2012-0874)

CallerIdentityLoginModule retained the password from the previous call if a
null password was provided. In non-default configurations this could
possibly lead to a remote attacker hijacking a previously-authenticated
user's session. (CVE-2012-3369)

Red Hat would like to thank Juraj Somorovsky of Ruhr-University Bochum for
reporting CVE-2011-1096 and CVE-2011-2487, and Tyler Krpata for reporting
CVE-2011-4575. CVE-2012-3370 and CVE-2012-3369 were discovered by Carlo de
Wolf of Red Hat; CVE-2012-5478 discovered by Derek Horton of Red Hat; and
CVE-2012-0874 was discovered by David Jorm of the Red Hat Security Response
Team.

Solution

Note: Manual action is required to apply the fix for CVE-2011-2730. If your
system has deployed applications which use Spring framework, the context
parameter "springJspExpressionSupport" must be set to "false" to mitigate
this flaw, for example, in the application's web.xml file. This will
prevent the double-evaluation of EL expressions that led to this flaw.

Warning: Before applying the update, back up your existing JBoss Enterprise
BRMS Platform installation (including its databases, applications,
configuration files, and so on).

The References section of this erratum contains a download link (you must
log in to download the update). Warning: Before applying the update, back
up your existing JBoss Enterprise BRMS Platform installation (including its
databases, applications, configuration files, and so on).

All users of JBoss Enterprise BRMS Platform 5.3.0 as provided from the Red
Hat Customer Portal are advised to upgrade to JBoss Enterprise BRMS
Platform 5.3.1.

Affected Products

• Red Hat JBoss Middleware Text-Only Advisories for RHEL 6 x86_64

Fixes

• BZ - 681916 - CVE-2011-1096 jbossws: Prone to character encoding pattern attack (XML Encryption flaw)
• BZ - 713539 - CVE-2011-2487 jbossws: Prone to Bleichenbacher attack against to be distributed symmetric key
• BZ - 737608 - CVE-2011-2730 Spring Framework: Information (internal server information, classpath, local working directories, session IDs) disclosure
• BZ - 760387 - CVE-2011-4575 JMX Console: XSS in invoke operation
• BZ - 772835 - CVE-2012-0034 JBoss Cache: NonManagedConnectionFactory will log password in clear text when an exception occurs
• BZ - 795645 - CVE-2012-0874 JBoss invoker servlets do not require authentication
• BZ - 836451 - CVE-2012-3369 JBoss: CallerIdentityLoginModule retaining password from previous call if a null password is provided
• BZ - 836456 - CVE-2012-3370 JBoss: SecurityAssociation.getCredential() will return the previous credential if no security context is provided
• BZ - 842477 - CVE-2009-5066 JBoss: twiddle.sh accepts credentials as command line arguments, exposing them to other local users via a process listing
• BZ - 874349 - CVE-2012-5478 JBoss: AuthorizationInterceptor allows JMX operation to proceed despite authorization failure
• BZ - 883634 - CVE-2012-3546 Tomcat/JBoss Web: Bypass of security constraints

CVEs

• CVE-2012-0034
• CVE-2011-1096
• CVE-2012-3546
• CVE-2009-5066
• CVE-2012-5478
• CVE-2011-4575
• CVE-2012-3370
• CVE-2011-2487
• CVE-2011-2730
• CVE-2012-3369
• CVE-2012-0874

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=brms&downloadType=distributions
• https://access.redhat.com/knowledge/docs/
• https://rhn.redhat.com/errata/RHSA-2012-1573.html