RHSA-2013:0234 - Security Advisory

Topic

An update for JBoss Enterprise Application Platform 6.0.1 which fixes one
security issue is now available from the Red Hat Customer Portal.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

Description

JBoss Enterprise Application Platform 6 is a platform for Java applications
based on JBoss Application Server 7.

When using LDAP authentication with either the "ldap" configuration entry
or the provided LDAP login modules (LdapLoginModule/LdapExtLoginModule),
empty passwords were allowed by default. An attacker could use this flaw to
bypass intended authentication by providing an empty password for a valid
username, as the LDAP server may recognize this as an 'unauthenticated
authentication' (RFC 4513). This update sets the allowEmptyPasswords option
for the LDAP login modules to false if the option is not already
configured. (CVE-2012-5629)

Note: If you are using the "ldap" configuration entry and rely on empty
passwords, they will no longer work after applying this update. The
jboss-as-domain-management module, by default, will prevent empty
passwords. This cannot be configured; however, a future release may add a
configuration option to allow empty passwords when using the "ldap"
configuration entry.

Warning: Before applying this update, back up your existing JBoss
Enterprise Application Platform installation and deployed applications.

All users of JBoss Enterprise Application Platform 6.0.1 as provided from
the Red Hat Customer Portal are advised to apply this update.

Solution

The References section of this erratum contains a download link (you must
log in to download the update). Before applying this update, back up your
existing JBoss Enterprise Application Platform installation and deployed
applications.

The JBoss server process must be restarted for this update to take effect.

Affected Products

• JBoss Enterprise Application Platform from RHUI 6 x86_64
• JBoss Enterprise Application Platform 6.4 for RHEL 6 x86_64
• JBoss Enterprise Application Platform 6 for RHEL 6 x86_64
• JBoss Enterprise Application Platform Text-Only Advisories x86_64

Fixes

• BZ - 885569 - CVE-2012-5629 JBoss: allows empty password to authenticate against LDAP

CVEs

• CVE-2012-5629

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=appplatform&downloadType=securityPatches&version=6.0.1
• http://tools.ietf.org/html/rfc4513