Important: jakarta-commons-collections security update
Security Advisory: Important
Updated jakarta-commons-collections packages that fix one security issue
are now available for Red Hat Enterprise Linux 5.
Red Hat Product Security 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.
The Jakarta/Apache Commons Collections library provides new interfaces,
implementations, and utilities to extend the features of the Java
Collections Framework.
It was found that the Apache commons-collections library permitted code
execution when deserializing objects involving a specially constructed
chain of classes. A remote attacker could use this flaw to execute
arbitrary code with the permissions of the application using the
commons-collections library. (CVE-2015-7501)
With this update, deserialization of certain classes in the
commons-collections library is no longer allowed. Applications that require
those classes to be deserialized can use the system property
"org.apache.commons.collections.enableUnsafeSerialization" to re-enable
their deserialization.
Further information about this security flaw may be found at:
https://access.redhat.com/solutions/2045023
All users of jakarta-commons-collections are advised to upgrade to these
updated packages, which contain a backported patch to correct this issue.
All running applications using the commons-collections library must be
restarted for the update to take effect.
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258