Spring Framework 3.0.0 through 3.0.5, Spring Security 3.0.0 through 3.0.5 and 2.0.0 through 2.0.6, and possibly other versions deserialize objects from untrusted sources, which allows remote attackers to bypass intended security restrictions and execute untrusted code by (1) serializing a java.lang.Proxy instance and using InvocationHandler, or (2) accessing internal AOP interfaces, as demonstrated using deserialization of a DefaultListableBeanFactory instance to execute arbitrary commands via the java.lang.Runtime class.
osvdb.org/75263
securityreason.com/securityalert/8405
www.redhat.com/support/errata/RHSA-2011-1334.html
www.securityfocus.com/archive/1/519593/100/0/threaded
www.securityfocus.com/bid/49536
www.springsource.com/security/cve-2011-2894
exchange.xforce.ibmcloud.com/vulnerabilities/69687
web.archive.org/web/20120307233721/www.springsource.com/security/cve-2011-2894