Java 1.7.0_21b11 Code Execution

测试方法:

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1. Thenew flaw was verified to affect all versions of Java SE
2. 7(including the recently released 1.7.0_21-b11).It can be
3. used to achieve a complete Java security sandbox bypass on
4. a target system.Successful exploitation in a web browser
5. scenario requires proper user interaction (a user needs to
6. accept the risk of executing a potentially malicious Java
7. application when a security warning window is displayed).
8.  
9. What's interesting is that the new issue is present not only
10. in JRE Plugin / JDK software, but also the recently announced
11. Server JRE as well [1]. Those concerned about a feasibility
12. of exploitation of Java flaws in a server environment should
13. consult Guideline 3-8 of "Secure Coding Guidelines for a Java
14. Programming Language" [2]. It lists the following software
15. components and APIs as potentially prone to the execution of
16. untrusted Java code:
17. - Sun implementation of the XSLT interpreter,
18. - Long Term Persistence of JavaBeans Components,
19. - RMI and LDAP (RFC 2713),
20. - Many SQL implementations.
21.  
22. In Apr 2012 [3], we reported our first vulnerability report
23. to Oracle corporation signaling multiple security problems in
24. Java SE 7 and the Reflection API in particular. It's been a
25. year since thenand to ourtrue surprise, we were still able
26. to discover one of the simplest and most powerful instances
27. of JavaReflection API based vulnerabilities.It looks Oracle
28. was primarily focused on hunting down potentially dangerous
29. Reflection API calls in the "allowed" classes space.If so,
30. no surprise that Issue61 was overlooked.
31.  
32. Thank you.
33.  
34. BestRegards
35. AdamGowdiak
36.  
37. ---------------------------------------------
38. SecurityExplorations
39. http://www.security-explorations.com
40. "We bring security research to the new level"
41. ---------------------------------------------
42.  
43. References:
44. [1]Server JRE (Java SE RuntimeEnvironment)7Downloads
46. http://www.oracle.com/technetwork/java/javase/downloads/server-jre7-downloads-1931105.html
47. [2]SecureCodingGuidelinesfor the JavaProgrammingLanguage,Version4.0
48. http://www.oracle.com/technetwork/java/seccodeguide-139067.html
49. [3] SE-2012-01Vendors status
50. http://www.security-explorations.com/en/SE-2012-01-status.html