Oracle Java lookUpByteBI – Heap Buffer Overflow

• Exploit Database
• 70 阅读

• 作者： GuHe
  日期： 2013-09-03
• 类别：

  • dos
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/28050/

• # Exploit Title: Oracle Java lookupByteBI function heap buffer overflow
  # Google Dork:
  # Date: 2013-09-03
  # Exploit Author: GuHe
  # Vendor Homepage: http://www.oracle.com/
  # Software Link:
  http://www.oracle.com/technetwork/java/javase/downloads/index.html
  # Version: 7u21 and eariler
  # Tested on: Windows 7
  # CVE : CVE-2013-2470
  
  PoC: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/28050.zip
  
  
  CVE-2013-2470 - Java_sun_awt_image_ImagingLib_lookupByteBI heap buffer
  overflow
  
  
  1. Affected Software
  JRE 7 update 21 and earlier
  JRE 6 update 45 and earlier
  
  
  2. Root cause analysis
  
  The "Java_sun_awt_image_ImagingLib_lookupByteBI" performs byte lookup
  operation on two BufferedImage.
  
  In the following code:
  
   /* Mlib needs 16bit lookuptable and must be signed! */
  if (src->type == MLIB_SHORT) {
  unsigned short *sdataP = (unsigned short *) src->data;
  unsigned short *sP;
  if (dst->type == MLIB_BYTE) {
  unsigned char *cdataP= (unsigned char *)dst->data;
  unsigned char *cP;
  if (nbands > 1) {
  retStatus = 0;
  }
  else {
  int x, y;
  for (y=0; y < src->height; y++) {
  cP = cdataP;
  sP = sdataP;
  for (x=0; x < src->width; x++) {
  *cP++ = table[0][*sP++];
  }
  
  /*
   * 4554571: increment pointers using the scanline stride
   * in pixel units (not byte units)
   */
  cdataP += dstImageP->raster.scanlineStride;
  sdataP += srcImageP->raster.scanlineStride;
  }
  }
  }
  /* How about ddata == null? */
  }
  
  It tries to map data in src raster to the dst raster. The total bytes
  written to dst rater buffer is:
  (src->width) * (src->height). However, it does not correctly check the size
  of the dst buffer, if the size of the
  dst buffer is smaller than (src->width) * (src->height), it will be
  overflowed.
  
  
  3. Poc
  See "TestByteBI.java" for the source code.
  And you can test the poc by directly open the "HelloApplet.html" in a web
  browser.
  
  
  4. Tested on
  JRE 7 update 21 on Windows 7 Enterprise
  

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