CVE-2011-2894

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.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Potential Mitigations

• Make fields transient to protect them from deserialization.
• An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/586.html

References

• http://osvdb.org/75263
• http://securityreason.com/securityalert/8405
• http://www.redhat.com/support/errata/RHSA-2011-1334.html
• http://www.securityfocus.com/archive/1/519593/100/0/threaded
• http://www.securityfocus.com/bid/49536
• http://www.springsource.com/security/cve-2011-2894
• https://exchange.xforce.ibmcloud.com/vulnerabilities/69687
• https://web.archive.org/web/20120307233721/http://www.springsource.com/security/cve-2011-2894
• http://osvdb.org/75263
• http://securityreason.com/securityalert/8405
• http://www.redhat.com/support/errata/RHSA-2011-1334.html
• http://www.securityfocus.com/archive/1/519593/100/0/threaded
• http://www.securityfocus.com/bid/49536
• http://www.springsource.com/security/cve-2011-2894
• https://exchange.xforce.ibmcloud.com/vulnerabilities/69687
• https://web.archive.org/web/20120307233721/http://www.springsource.com/security/cve-2011-2894